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< title > SimStr benchmarks results< / title >
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"Copy not literal Str with N symbols": "Length of the copied string",
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< / head > < body > < div class = "header" > < h2 > simstr benchmarks results< / h2 >
< div style = "font-size:16pt;margin:20px;text-align:center" > < a href = "https://github.com/orefkov/simstr" > simstr< / a > is a powerful and convenient library for productive work with strings in C++.< / div >
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< span > All times in ns.< / span >
< span > < a href = "https://github.com/orefkov/simstr/blob/main/bench/bench_str.cpp" > Source for benchmarks< / a > < / span >
< div > Group tests by platforms in charts: < input type = "checkbox" id = "gbp" checked onchange = "switchGrouping()" / > < / div > < div class = "test_platforms" > < h3 > Test configurations:< / h3 > < ul >
< li > < span class = "platform" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / span > < span class = "tooltip" > 32 X 2494.22 MHz CPU s< span class = "tooltiptext" > CPU Caches:
L1 Data 32 KiB (x16)
L1 Instruction 32 KiB (x16)
L2 Unified 256 KiB (x16)
L3 Unified 40960 KiB (x1)
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Load Average: 0.43, 0.77, 0.52
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***WARNING*** ASLR is enabled, the results may have unreproducible noise in them.< / span > < / span > Include in charts: < input type = "checkbox" id = "pl0" checked onchange = "buildCharts()" / > < / li >
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< li > < span class = "platform" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / span > < span class = "tooltip" > 32 X 2494.22 MHz CPU s< span class = "tooltiptext" > CPU Caches:
L1 Data 32 KiB (x16)
L1 Instruction 32 KiB (x16)
L2 Unified 256 KiB (x16)
L3 Unified 40960 KiB (x1)
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Load Average: 0.00, 0.00, 0.00
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***WARNING*** ASLR is enabled, the results may have unreproducible noise in them.< / span > < / span > Include in charts: < input type = "checkbox" id = "pl1" checked onchange = "buildCharts()" / > < / li >
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< li > < span class = "platform" > Xeon E5-2682 v4, Windows 10, Clang-19< / span > < span class = "tooltip" > 32 X 2494 MHz CPU s< span class = "tooltiptext" > CPU Caches:
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L1 Data 32 KiB (x16)
L1 Instruction 32 KiB (x16)
L2 Unified 256 KiB (x16)
L3 Unified 40960 KiB (x1)< / span > < / span > Include in charts: < input type = "checkbox" id = "pl2" checked onchange = "buildCharts()" / > < / li >
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< li > < span class = "platform" > Xeon E5-2682 v4, Windows 10, MSVC-19< / span > < span class = "tooltip" > 32 X 2494 MHz CPU s< span class = "tooltiptext" > CPU Caches:
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L1 Data 32 KiB (x16)
L1 Instruction 32 KiB (x16)
L2 Unified 256 KiB (x16)
L3 Unified 40960 KiB (x1)< / span > < / span > Include in charts: < input type = "checkbox" id = "pl3" checked onchange = "buildCharts()" / > < / li >
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< li > < span class = "platform" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / span > < span class = "tooltip" > 32 X 2513.96 MHz CPU s< span class = "tooltiptext" > Chrome/143.0.0.0 webasm< / span > < / span > Include in charts: < input type = "checkbox" id = "pl4" checked onchange = "buildCharts()" / > < / li >
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< / ul > < / div > < / div >
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< script > const platform _names = [ 'Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21' , 'Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13' , 'Xeon E5-2682 v4, Windows 10, Clang-19' , 'Xeon E5-2682 v4, Windows 10, MSVC-19' , 'Xeon E5-2682 v4, WASM Chrome 143, Clang-21' ] ; < / script >
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< div class = "benchset" id = "bs1" > < h4 > < a id = "bs15359472366966513900" href = "#bs15359472366966513900" > #< / a > Concatenate email< / h4 >
< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L94" > Concat email std::format< / a > < span class = "tooltiptext code" > std::string email_concat_format(std::string_view name, std::string_view domain, std::string_view tld) {
return std::format(" {}@{}.{}" , name, domain, tld);
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 163< / td > < td class = "benchmarkresult" > 177< / td > < td class = "benchmarkresult" > 203< / td > < td class = "benchmarkresult" > 259< / td > < td class = "benchmarkresult" > 964< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L109" > Concat email std::stringstream< / a > < span class = "tooltiptext code" > std::string email_concat_stream(std::string_view name, std::string_view domain, std::string_view tld) {
std::stringstream s;
s < < name < < " @" < < domain < < " ." < < tld;
return s.str();
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 322< / td > < td class = "benchmarkresult" > 328< / td > < td class = "benchmarkresult" > 792< / td > < td class = "benchmarkresult" > 898< / td > < td class = "benchmarkresult" > 2458< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L60" > Concat email stringzilla append< / a > < span class = "tooltiptext code" > sz::string email_concat_stringzilla_app(sz::string name, sz::string_view domain, sz::string_view tld) {
return name.append(" @" ).append(domain).append(" ." ).append(tld);
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 133< / td > < td class = "benchmarkresult" > 115< / td > < td class = "benchmarkresult" > 268< / td > < td class = "benchmarkresult" > 282< / td > < td class = "benchmarkresult" > 594< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L77" > Concat email stringzilla concat< / a > < span class = "tooltiptext code" > sz::string email_concat_stringzilla_exp(sz::string name, sz::string_view domain, sz::string_view tld) {
return sz::string{name | sz::string_view{" @" } | domain | sz::string_view{" ." } | tld};
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > В
так удобна и развита, как в simstr.
Stringzilla also has concatenation by expression templates,
but it's not as convenient or advanced as simstr.< / span > < / span > < / td > < td class = "benchmarkresult" > 54.9< / td > < td class = "benchmarkresult" > 48.3< / td > < td class = "benchmarkresult" > 126< / td > < td class = "benchmarkresult" > 131< / td > < td class = "benchmarkresult" > 213< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L126" > Concat email std::string append< / a > < span class = "tooltiptext code" > std::string email_concat_std(std::string name, std::string_view domain, std::string_view tld) {
return name.append(" @" ).append(domain).append(" ." ).append(tld);
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 72.1< / td > < td class = "benchmarkresult" > 96.7< / td > < td class = "benchmarkresult" > 189< / td > < td class = "benchmarkresult" > 198< / td > < td class = "benchmarkresult" > 623< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L142" > Concat email std::string by strexpr< / a > < span class = "tooltiptext code" > std::string email_concat_std_expr(std::string_view name, std::string_view domain, std::string_view tld) {
return +name + " @" + domain + " ." + tld;
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 44.3< / td > < td class = "benchmarkresult" > 33.5< / td > < td class = "benchmarkresult" > 108< / td > < td class = "benchmarkresult" > 106< / td > < td class = "benchmarkresult" > 158< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L157" > Concat email stringa< / a > < span class = "tooltiptext code" > stringa email_concat_sim_expr(ssa name, ssa domain, ssa tld) {
return name + " @" + domain + " ." + tld;
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 39.9< / td > < td class = "benchmarkresult" > 40.3< / td > < td class = "benchmarkresult" > 92.7< / td > < td class = "benchmarkresult" > 103< / td > < td class = "benchmarkresult" > 124< / td > < / tr >
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' C o n c a t e n a t e e m a i l ' ] = { i d : ' b s 1 ' , t e s t s : [
{name:'Concat email std::format',data:[163,177,203,259,964]},
{name:'Concat email std::stringstream',data:[322,328,792,898,2458]},
{name:'Concat email stringzilla append',data:[133,115,268,282,594]},
{name:'Concat email stringzilla concat',data:[54.9,48.3,126,131,213]},
{name:'Concat email std::string append',data:[72.1,96.7,189,198,623]},
{name:'Concat email std::string by strexpr',data:[44.3,33.5,108,106,158]},
{name:'Concat email stringa',data:[39.9,40.3,92.7,103,124]}
]}< / script >
< div class = "benchset" id = "bs2" > < h4 > < a id = "bs70109915512075798510" href = "#bs70109915512075798510" > #< / a > Concatenate string + Number + " Literal" < / h4 >
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< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
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< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L181" > Concat std::string and number by std to std::string< / a > < span class = "tooltiptext code" > void ConcatStdToStd(benchmark::State& state) {
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std::string s1 = " start " ;
for (auto _: state) {
for (int i = 1; i < = 100' 000; i *= 10) {
benchmark::DoNotOptimize(s1);
std::string str = s1 + std::to_string(i) + " end" ;
benchmark::DoNotOptimize(str);
}
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 214< / td > < td class = "benchmarkresult" > 224< / td > < td class = "benchmarkresult" > 273< / td > < td class = "benchmarkresult" > 320< / td > < td class = "benchmarkresult" > 1831< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L192" > Concat std::string and number by StrExpr to std::string< / a > < span class = "tooltiptext code" > void ConcatSimToStd(benchmark::State& state) {
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std::string s1 = " start " ;
for (auto _: state) {
for (int i = 1; i < = 100' 000; i *= 10) {
benchmark::DoNotOptimize(s1);
std::string str = +s1 + i + " end" ;
benchmark::DoNotOptimize(str);
}
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 103< / td > < td class = "benchmarkresult" > 100< / td > < td class = "benchmarkresult" > 152< / td > < td class = "benchmarkresult" > 212< / td > < td class = "benchmarkresult" > 947< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L203" > Concat stringa and number by StrExpr to simstr::stringa< / a > < span class = "tooltiptext code" > void ConcatSimToSim(benchmark::State& state) {
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stra s1 = " start " ;
for (auto _: state) {
for (int i = 1; i < = 100' 000; i *= 10) {
benchmark::DoNotOptimize(s1);
stringa str = s1 + i + " end" ;
benchmark::DoNotOptimize(str);
}
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > stringa в отличии от std::string,
вмещает в SSO 23 символа вместо 15, поэтому
в конце теста std::string приходится аллоцировать память,
а
Unlike std::string, stringa
holds 23 characters in SSO instead of 15, so
at the end of the std::string test, memory has to be allocated,
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while in stringa , the entire test is included in SSO.< / span > < / span > < / td > < td class = "benchmarkresult" > 63.0< / td > < td class = "benchmarkresult" > 72.8< / td > < td class = "benchmarkresult" > 70.1< / td > < td class = "benchmarkresult" > 107< / td > < td class = "benchmarkresult" > 354< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L214" > Concat stringa and number by e_concat to simstr::stringa< / a > < span class = "tooltiptext code" > void ConcatSimToSimConcat(benchmark::State& state) {
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stra s1 = " start " ;
for (auto _: state) {
for (int i = 1; i < = 100' 000; i *= 10) {
benchmark::DoNotOptimize(s1);
stringa str = e_concat(" " , s1, i, " end" );
benchmark::DoNotOptimize(str);
}
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 67.4< / td > < td class = "benchmarkresult" > 75.7< / td > < td class = "benchmarkresult" > 74.4< / td > < td class = "benchmarkresult" > 115< / td > < td class = "benchmarkresult" > 377< / td > < / tr >
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' C o n c a t e n a t e s t r i n g + N u m b e r + " L i t e r a l " ' ] = { i d : ' b s 2 ' , t e s t s : [
{name:'Concat std::string and number by std to std::string',data:[214,224,273,320,1831]},
{name:'Concat std::string and number by StrExpr to std::string',data:[103,100,152,212,947]},
{name:'Concat stringa and number by StrExpr to simstr::stringa',data:[63.0,72.8,70.1,107,354]},
{name:'Concat stringa and number by e_concat to simstr::stringa',data:[67.4,75.7,74.4,115,377]}
2026-01-21 11:59:17 +00:00
]}< / script >
2026-02-14 10:09:54 +00:00
< div class = "benchset" id = "bs3" > < h4 > < a id = "bs146911715078927772520" href = "#bs146911715078927772520" > #< / a > Concatenate string + Hex Number + " Literal" < / h4 >
2026-02-08 11:17:03 +00:00
< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-14 10:09:54 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L231" > Concat std::string and format hex number and literal to std::string< / a > < span class = "tooltiptext code" > void ConcatStdToFmtHex(benchmark::State& state) {
2026-01-30 14:30:09 +00:00
// We use a short string so that the longest result is 15 characters and fits in the std::string SSO buffer.
std::string s1 = " art " ;
for (auto _: state) {
for (unsigned i = 1; i < = 100' 000; i *= 10) {
benchmark::DoNotOptimize(s1);
// It is not worked for char8_t, char16_t, char32_t :(
std::string str = s1 + std::format(" {:#x}" , i) + " end" ;
benchmark::DoNotOptimize(str);
}
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 654< / td > < td class = "benchmarkresult" > 712< / td > < td class = "benchmarkresult" > 705< / td > < td class = "benchmarkresult" > 1044< / td > < td class = "benchmarkresult" > 3883< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L244" > std::format std::string and hex number by literal to std::string< / a > < span class = "tooltiptext code" > void ConcatAllFmtToHex(benchmark::State& state) {
2026-01-30 14:30:09 +00:00
// We use a short string so that the longest result is 15 characters and fits in the std::string SSO buffer.
std::string s1 = " art " ;
for (auto _: state) {
for (unsigned i = 1; i < = 100' 000; i *= 10) {
benchmark::DoNotOptimize(s1);
// It is not worked for char8_t, char16_t, char32_t :(
std::string str = std::format(" {}{:#x} end" , s1, i);
benchmark::DoNotOptimize(str);
}
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 874< / td > < td class = "benchmarkresult" > 969< / td > < td class = "benchmarkresult" > 1462< / td > < td class = "benchmarkresult" > 1832< / td > < td class = "benchmarkresult" > 4986< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L256" > Concat std::string and std::to_chars and string to std::string< / a > < span class = "tooltiptext code" > void ConcatStdToCharsHex(benchmark::State& state) {
2026-01-21 11:59:17 +00:00
// We use a short string so that the longest result is 15 characters and fits in the std::string SSO buffer.
std::string s1 = " art " ;
for (auto _: state) {
for (unsigned i = 1; i < = 100' 000; i *= 10) {
benchmark::DoNotOptimize(s1);
2026-01-30 14:30:09 +00:00
// it worked only for char :(
char buf[40];
size_t len = std::to_chars(buf, buf + std::size(buf), i, 16).ptr - buf;
std::string str = s1 + " 0x" + std::string(buf, len) + " end" ;
2026-01-21 11:59:17 +00:00
benchmark::DoNotOptimize(str);
}
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 196< / td > < td class = "benchmarkresult" > 252< / td > < td class = "benchmarkresult" > 189< / td > < td class = "benchmarkresult" > 253< / td > < td class = "benchmarkresult" > 1124< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L271" > Concat std::string and hex number and literal by StrExpr to std::string< / a > < span class = "tooltiptext code" > void ConcatSimToStdHex(benchmark::State& state) {
2026-01-21 11:59:17 +00:00
// We use a short string so that the longest result is 15 characters and fits in the std::string SSO buffer.
std::string s1 = " art " ;
for (auto _: state) {
for (unsigned i = 1; i < = 100' 000; i *= 10) {
benchmark::DoNotOptimize(s1);
2026-01-30 14:30:09 +00:00
// Can work for all types of symbols
2026-02-08 11:17:03 +00:00
std::string str = +s1 + i / 1_f16 + " end" ;
2026-01-21 11:59:17 +00:00
benchmark::DoNotOptimize(str);
}
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 131< / td > < td class = "benchmarkresult" > 124< / td > < td class = "benchmarkresult" > 87.4< / td > < td class = "benchmarkresult" > 115< / td > < td class = "benchmarkresult" > 873< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L284" > Concat stringa and hex number and literal by StrExpr to simstr::stringa< / a > < span class = "tooltiptext code" > void ConcatSimToSimHex(benchmark::State& state) {
2026-01-21 11:59:17 +00:00
// stringa SSO buffer is 23, but we use a short string to compare under the same conditions
stra s1 = " art " ;
for (auto _: state) {
for (unsigned i = 1; i < = 100' 000; i *= 10) {
benchmark::DoNotOptimize(s1);
2026-01-30 14:30:09 +00:00
// Can work for all types of symbols
2026-02-08 11:17:03 +00:00
stringa str = s1 + i / 1_f16 + " end" ;
2026-01-21 11:59:17 +00:00
benchmark::DoNotOptimize(str);
}
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 115< / td > < td class = "benchmarkresult" > 120< / td > < td class = "benchmarkresult" > 77.7< / td > < td class = "benchmarkresult" > 99.3< / td > < td class = "benchmarkresult" > 257< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L297" > Concat stringa and hex number and literal by e_concat to simstr::stringa< / a > < span class = "tooltiptext code" > void ConcatSimToSimHexC(benchmark::State& state) {
2026-01-29 20:48:41 +00:00
// stringa SSO buffer is 23, but we use a short string to compare under the same conditions
stra s1 = " art " ;
for (auto _: state) {
for (unsigned i = 1; i < = 100' 000; i *= 10) {
benchmark::DoNotOptimize(s1);
2026-01-30 14:30:09 +00:00
// Can work for all types of symbols
2026-02-08 11:17:03 +00:00
stringa str = e_concat(" " , s1, i / 1_f16, " end" );
2026-01-29 20:48:41 +00:00
benchmark::DoNotOptimize(str);
}
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 122< / td > < td class = "benchmarkresult" > 126< / td > < td class = "benchmarkresult" > 76.3< / td > < td class = "benchmarkresult" > 106< / td > < td class = "benchmarkresult" > 269< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L310" > Subst stringa and hex number by e_subst literal to simstr::stringa< / a > < span class = "tooltiptext code" > void ConcatSimToSimHexS(benchmark::State& state) {
2026-01-29 20:48:41 +00:00
// stringa SSO buffer is 23, but we use a short string to compare under the same conditions
stra s1 = " art " ;
for (auto _: state) {
for (unsigned i = 1; i < = 100' 000; i *= 10) {
benchmark::DoNotOptimize(s1);
2026-02-08 11:17:03 +00:00
stringa str = e_subst(" {}{} end" , s1, i / 1_f16);
2026-01-29 20:48:41 +00:00
benchmark::DoNotOptimize(str);
}
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 180< / td > < td class = "benchmarkresult" > 164< / td > < td class = "benchmarkresult" > 152< / td > < td class = "benchmarkresult" > 171< / td > < td class = "benchmarkresult" > 541< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L322" > Subst stringa and hex number by e_vsubst stra to simstr::stringa< / a > < span class = "tooltiptext code" > void ConcatSimToSimHexVS(benchmark::State& state) {
2026-01-31 14:24:12 +00:00
// stringa SSO buffer is 23, but we use a short string to compare under the same conditions
stra s1 = " art " ;
for (auto _: state) {
for (unsigned i = 1; i < = 100' 000; i *= 10) {
benchmark::DoNotOptimize(s1);
2026-02-08 11:17:03 +00:00
stringa str = e_vsubst(" {}{} end" _ss, s1, i / 1_f16);
2026-01-31 14:24:12 +00:00
benchmark::DoNotOptimize(str);
}
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 313< / td > < td class = "benchmarkresult" > 302< / td > < td class = "benchmarkresult" > 279< / td > < td class = "benchmarkresult" > 356< / td > < td class = "benchmarkresult" > 1765< / td > < / tr >
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' C o n c a t e n a t e s t r i n g + H e x N u m b e r + " L i t e r a l " ' ] = { i d : ' b s 3 ' , t e s t s : [
{name:'Concat std::string and format hex number and literal to std::string',data:[654,712,705,1044,3883]},
{name:'std::format std::string and hex number by literal to std::string',data:[874,969,1462,1832,4986]},
{name:'Concat std::string and std::to_chars and string to std::string',data:[196,252,189,253,1124]},
{name:'Concat std::string and hex number and literal by StrExpr to std::string',data:[131,124,87.4,115,873]},
{name:'Concat stringa and hex number and literal by StrExpr to simstr::stringa',data:[115,120,77.7,99.3,257]},
{name:'Concat stringa and hex number and literal by e_concat to simstr::stringa',data:[122,126,76.3,106,269]},
{name:'Subst stringa and hex number by e_subst literal to simstr::stringa',data:[180,164,152,171,541]},
{name:'Subst stringa and hex number by e_vsubst stra to simstr::stringa',data:[313,302,279,356,1765]}
2026-01-21 11:59:17 +00:00
]}< / script >
2026-02-14 10:09:54 +00:00
< div class = "benchset" id = "bs4" > < h4 > < a id = "bs32341904136562619220" href = "#bs32341904136562619220" > #< / a > format/vformat and subst/vsubst octal number to 32 symbols result< / h4 >
2026-02-08 11:17:03 +00:00
< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-14 10:09:54 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L344" > " abcdefghihklmopqr " _ss + i / 0x8a010_fmt + " end" < / a > < span class = "tooltiptext code" > void ConcatSimToSimOct(benchmark::State& state) {
2026-02-03 07:38:21 +00:00
for (auto _: state) {
for (unsigned i = 1; i < = 100' 000; i *= 10) {
2026-02-08 11:17:03 +00:00
stringa str = " abcdefghihklmopqr " _ss + i / 0x8a010_fmt + " end" ;
2026-02-03 07:38:21 +00:00
benchmark::DoNotOptimize(str);
}
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 280< / td > < td class = "benchmarkresult" > 266< / td > < td class = "benchmarkresult" > 660< / td > < td class = "benchmarkresult" > 698< / td > < td class = "benchmarkresult" > 843< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L353" > e_subst(" abcdefghihklmopqr {} end" , i / 0x8a010_fmt)< / a > < span class = "tooltiptext code" > void SubstSimToSimOct(benchmark::State& state) {
2026-02-03 07:38:21 +00:00
for (auto _: state) {
for (unsigned i = 1; i < = 100' 000; i *= 10) {
2026-02-08 11:17:03 +00:00
stringa str = e_subst(" abcdefghihklmopqr {} end" , i / 0x8a010_fmt);
2026-02-03 07:38:21 +00:00
benchmark::DoNotOptimize(str);
}
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 341< / td > < td class = "benchmarkresult" > 324< / td > < td class = "benchmarkresult" > 778< / td > < td class = "benchmarkresult" > 813< / td > < td class = "benchmarkresult" > 1112< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L362" > e_vsubst(pattern, i / 0x8a010_fmt)< / a > < span class = "tooltiptext code" > void VSubstSimToSimOct(benchmark::State& state) {
2026-02-08 11:17:03 +00:00
ssa pattern = " abcdefghihklmopqr {} end" ;
2026-02-03 07:38:21 +00:00
for (auto _: state) {
for (unsigned i = 1; i < = 100' 000; i *= 10) {
2026-02-04 14:25:40 +00:00
stringa str = e_vsubst(pattern, i / 0x8a010_fmt);
benchmark::DoNotOptimize(str);
}
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 599< / td > < td class = "benchmarkresult" > 583< / td > < td class = "benchmarkresult" > 1061< / td > < td class = "benchmarkresult" > 1118< / td > < td class = "benchmarkresult" > 2885< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L402" > fmt::format(FMT_COMPILE(" abcdefghihklmopqr {:#010o} end" ), i)< / a > < span class = "tooltiptext code" > void FmtFormatComp(benchmark::State& state) {
2026-02-04 14:25:40 +00:00
for (auto _: state) {
for (unsigned i = 1; i < = 100' 000; i *= 10) {
2026-02-08 11:17:03 +00:00
std::string str = fmt::format(FMT_COMPILE(" abcdefghihklmopqr {:#010o} end" ), i);
2026-02-03 07:38:21 +00:00
benchmark::DoNotOptimize(str);
}
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 676< / td > < td class = "benchmarkresult" > 785< / td > < td class = "benchmarkresult" > 1404< / td > < td class = "benchmarkresult" > 1550< / td > < td class = "benchmarkresult" > 4562< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L411" > fmt::format(" abcdefghihklmopqr {:#010o} end" , i)< / a > < span class = "tooltiptext code" > void FmtFormat(benchmark::State& state) {
2026-02-08 11:17:03 +00:00
for (auto _: state) {
for (unsigned i = 1; i < = 100' 000; i *= 10) {
std::string str = fmt::format(" abcdefghihklmopqr {:#010o} end" , i);
benchmark::DoNotOptimize(str);
}
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 832< / td > < td class = "benchmarkresult" > 827< / td > < td class = "benchmarkresult" > 1355< / td > < td class = "benchmarkresult" > 1431< / td > < td class = "benchmarkresult" > 4550< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L372" > std::format(" abcdefghihklmopqr {:#010o} end" , i)< / a > < span class = "tooltiptext code" > void FormatStdToStdOct(benchmark::State& state) {
2026-02-08 11:17:03 +00:00
for (auto _: state) {
for (unsigned i = 1; i < = 100' 000; i *= 10) {
std::string str = std::format(" abcdefghihklmopqr {:#010o} end" , i);
benchmark::DoNotOptimize(str);
}
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1007< / td > < td class = "benchmarkresult" > 1224< / td > < td class = "benchmarkresult" > 1542< / td > < td class = "benchmarkresult" > 1923< / td > < td class = "benchmarkresult" > 5661< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L381" > std::vformat(pattern, std::make_format_args(i))< / a > < span class = "tooltiptext code" > void VFormatStdToStdOct(benchmark::State& state) {
2026-02-08 11:17:03 +00:00
std::string_view pattern = " abcdefghihklmopqr {:#010o} end" ;
2026-02-03 07:38:21 +00:00
for (auto _: state) {
for (unsigned i = 1; i < = 100' 000; i *= 10) {
std::string str = std::vformat(pattern, std::make_format_args(i));
benchmark::DoNotOptimize(str);
}
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1001< / td > < td class = "benchmarkresult" > 1100< / td > < td class = "benchmarkresult" > 1549< / td > < td class = "benchmarkresult" > 1941< / td > < td class = "benchmarkresult" > 5730< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L391" > strm < < " abcdefghihklmopqr 0" < < std::oct < < std::setw(9) < < std::setfill(' 0' ) < < i < < " end" < / a > < span class = "tooltiptext code" > void StreamStdToStdOct(benchmark::State& state) {
2026-02-04 14:25:40 +00:00
for (auto _: state) {
for (unsigned i = 1; i < = 100' 000; i *= 10) {
std::stringstream strm;
2026-02-08 11:17:03 +00:00
strm < < " abcdefghihklmopqr 0" < < std::oct < < std::setw(9) < < std::setfill(' 0' ) < < i < < " end" ;
2026-02-04 14:25:40 +00:00
std::string str = strm.str();
benchmark::DoNotOptimize(str);
}
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 2029< / td > < td class = "benchmarkresult" > 2121< / td > < td class = "benchmarkresult" > 6785< / td > < td class = "benchmarkresult" > 7038< / td > < td class = "benchmarkresult" > 19623< / td > < / tr >
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' f o r m a t / v f o r m a t a n d s u b s t / v s u b s t o c t a l n u m b e r t o 3 2 s y m b o l s r e s u l t ' ] = { i d : ' b s 4 ' , t e s t s : [
{name:'"abcdefghihklmopqr "_ss + i / 0x8a010_fmt + " end"',data:[280,266,660,698,843]},
{name:'e_subst("abcdefghihklmopqr {} end", i / 0x8a010_fmt)',data:[341,324,778,813,1112]},
{name:'e_vsubst(pattern, i / 0x8a010_fmt)',data:[599,583,1061,1118,2885]},
{name:'fmt::format(FMT_COMPILE("abcdefghihklmopqr {:#010o} end"), i)',data:[676,785,1404,1550,4562]},
{name:'fmt::format("abcdefghihklmopqr {:#010o} end", i)',data:[832,827,1355,1431,4550]},
{name:'std::format("abcdefghihklmopqr {:#010o} end", i)',data:[1007,1224,1542,1923,5661]},
{name:'std::vformat(pattern, std::make_format_args(i))',data:[1001,1100,1549,1941,5730]},
{name:'strm < < "abcdefghihklmopqr 0" < < std::oct < < std::setw ( 9 ) < < std::setfill ( \ ' 0 \ ' ) < < i < < " end " ' , data: [ 2029 , 2121 , 6785 , 7038 , 19623 ] }
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]}< / script >
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< div class = "benchset" id = "bs5" > < h4 > < a id = "bs59672599204338055190" href = "#bs59672599204338055190" > #< / a > Concatenate string + " Literal" < / h4 >
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< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-14 10:09:54 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L431" > Concat std::string by std to std::string< / a > < span class = "tooltiptext code" > void ConcatStdToStdS(benchmark::State& state) {
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std::string s1 = " start " ;
for (auto _: state) {
for (int i = 1; i < = 100' 000; i *= 10) {
benchmark::DoNotOptimize(s1);
std::string str = s1 + " end" ;
benchmark::DoNotOptimize(str);
}
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 49.0< / td > < td class = "benchmarkresult" > 52.3< / td > < td class = "benchmarkresult" > 41.5< / td > < td class = "benchmarkresult" > 55.6< / td > < td class = "benchmarkresult" > 143< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L442" > Concat std::string by StrExpr to std::string< / a > < span class = "tooltiptext code" > void ConcatSimToStdS(benchmark::State& state) {
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std::string s1 = " start " ;
for (auto _: state) {
for (int i = 1; i < = 100' 000; i *= 10) {
benchmark::DoNotOptimize(s1);
std::string str = +s1 + " end" ;
benchmark::DoNotOptimize(str);
}
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 39.9< / td > < td class = "benchmarkresult" > 34.1< / td > < td class = "benchmarkresult" > 38.6< / td > < td class = "benchmarkresult" > 81.8< / td > < td class = "benchmarkresult" > 168< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L453" > Concat stringa by StrExpr to stringa< / a > < span class = "tooltiptext code" > void ConcatSimToSimS(benchmark::State& state) {
2026-01-21 11:59:17 +00:00
stra s1 = " start " ;
for (auto _: state) {
for (int i = 1; i < = 100' 000; i *= 10) {
benchmark::DoNotOptimize(s1);
stringa str = s1 + " end" ;
benchmark::DoNotOptimize(str);
}
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 27.1< / td > < td class = "benchmarkresult" > 27.5< / td > < td class = "benchmarkresult" > 28.7< / td > < td class = "benchmarkresult" > 50.8< / td > < td class = "benchmarkresult" > 136< / td > < / tr >
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' C o n c a t e n a t e s t r i n g + " L i t e r a l " ' ] = { i d : ' b s 5 ' , t e s t s : [
{name:'Concat std::string by std to std::string',data:[49.0,52.3,41.5,55.6,143]},
{name:'Concat std::string by StrExpr to std::string',data:[39.9,34.1,38.6,81.8,168]},
{name:'Concat stringa by StrExpr to stringa',data:[27.1,27.5,28.7,50.8,136]}
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]}< / script >
2026-02-14 10:09:54 +00:00
< div class = "benchset" id = "bs6" > < h4 > < a id = "bs68116594352702954700" href = "#bs68116594352702954700" > #< / a > Find three concatenated string in string_view< / h4 >
2026-02-08 11:17:03 +00:00
< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-14 10:09:54 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L469" > Find concat three std::string< / a > < span class = "tooltiptext code" > size_t find_pos_str(std::string_view src, std::string_view name) {
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// before C++26 we can not concatenate string and string_view...
return src.find(" \n- " s + std::string{name} + " -\n" );
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 110< / td > < td class = "benchmarkresult" > 137< / td > < td class = "benchmarkresult" > 205< / td > < td class = "benchmarkresult" > 228< / td > < td class = "benchmarkresult" > 542< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L474" > Find concat three strexpr< / a > < span class = "tooltiptext code" > size_t find_pos_exp(ssa src, ssa name) {
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return src.find(std::string{" \n- " + name + " -\n" });
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 51.5< / td > < td class = "benchmarkresult" > 38.1< / td > < td class = "benchmarkresult" > 118< / td > < td class = "benchmarkresult" > 132< / td > < td class = "benchmarkresult" > 294< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L478" > Find concat three simstr< / a > < span class = "tooltiptext code" > size_t find_pos_sim(ssa src, ssa name) {
2026-01-21 11:59:17 +00:00
return src.find(lstringa< 200>{" \n- " + name + " -\n" });
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Если результат конкатенации меньше 207 символов,
он собирается в буфере на стеке, без аллокации и деалокации.
If the concatenation result is less than 207 characters,
2026-02-14 10:09:54 +00:00
it is collected in a stack-based buffer, without allocation or deallocation.< / span > < / span > < / td > < td class = "benchmarkresult" > 19.4< / td > < td class = "benchmarkresult" > 15.9< / td > < td class = "benchmarkresult" > 27.2< / td > < td class = "benchmarkresult" > 29.2< / td > < td class = "benchmarkresult" > 174< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L482" > Find concat three stringzilla string< / a > < span class = "tooltiptext code" > size_t find_pos_sz(sz::string_view src, sz::string_view name) {
return src.find(sz::string{" \n- " }.append(name).append(" -\n" ));
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 146< / td > < td class = "benchmarkresult" > 150< / td > < td class = "benchmarkresult" > 215< / td > < td class = "benchmarkresult" > 228< / td > < td class = "benchmarkresult" > 619< / td > < / tr >
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' F i n d t h r e e c o n c a t e n a t e d s t r i n g i n s t r i n g _ v i e w ' ] = { i d : ' b s 6 ' , t e s t s : [
{name:'Find concat three std::string',data:[110,137,205,228,542]},
{name:'Find concat three strexpr',data:[51.5,38.1,118,132,294]},
{name:'Find concat three simstr',data:[19.4,15.9,27.2,29.2,174]},
{name:'Find concat three stringzilla string',data:[146,150,215,228,619]}
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]}< / script >
2026-02-14 10:09:54 +00:00
< div class = "benchset" id = "bs7" > < h4 > < a id = "bs145290966789248325200" href = "#bs145290966789248325200" > #< / a > Build Type Name< / h4 >
2026-02-08 11:17:03 +00:00
< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-14 10:09:54 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L558" > BuildTypeNameStr 0/0< / a > < span class = "tooltiptext code" > std::string buildTypeNameStr(std::string_view type_name, size_t prec, size_t scale) {
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std::string res{type_name};
if (prec) {
res += " (" + std::to_string(prec);
if (scale) {
res += " ," + std::to_string(scale);
}
res += " )" ;
}
return res;
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 7.65< / td > < td class = "benchmarkresult" > 10.1< / td > < td class = "benchmarkresult" > 8.48< / td > < td class = "benchmarkresult" > 18.1< / td > < td class = "benchmarkresult" > 27.4< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L570" > BuildTypeNameExp 0/0< / a > < span class = "tooltiptext code" > std::string buildTypeNameExp(ssa type_name, size_t prec, size_t scale) {
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if (prec) {
return type_name + " (" + prec + e_if(scale, " ," _ss + scale) + " )" ;
}
return type_name;
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 6.50< / td > < td class = "benchmarkresult" > 8.75< / td > < td class = "benchmarkresult" > 7.64< / td > < td class = "benchmarkresult" > 14.5< / td > < td class = "benchmarkresult" > 28.9< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L577" > BuildTypeNameSim 0/0< / a > < span class = "tooltiptext code" > stringa buildTypeNameSim(ssa type_name, size_t prec, size_t scale) {
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if (prec) {
return type_name + " (" + prec + e_if(scale, " ," _ss + scale) + " )" ;
}
return type_name;
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 4.14< / td > < td class = "benchmarkresult" > 4.90< / td > < td class = "benchmarkresult" > 7.75< / td > < td class = "benchmarkresult" > 16.3< / td > < td class = "benchmarkresult" > 38.4< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L558" > BuildTypeNameStr 10/10< / a > < span class = "tooltiptext code" > std::string buildTypeNameStr(std::string_view type_name, size_t prec, size_t scale) {
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std::string res{type_name};
if (prec) {
res += " (" + std::to_string(prec);
if (scale) {
res += " ," + std::to_string(scale);
}
res += " )" ;
}
return res;
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 56.9< / td > < td class = "benchmarkresult" > 84.3< / td > < td class = "benchmarkresult" > 59.6< / td > < td class = "benchmarkresult" > 85.7< / td > < td class = "benchmarkresult" > 652< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L570" > BuildTypeNameExp 10/10< / a > < span class = "tooltiptext code" > std::string buildTypeNameExp(ssa type_name, size_t prec, size_t scale) {
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if (prec) {
return type_name + " (" + prec + e_if(scale, " ," _ss + scale) + " )" ;
}
return type_name;
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 29.9< / td > < td class = "benchmarkresult" > 25.9< / td > < td class = "benchmarkresult" > 33.3< / td > < td class = "benchmarkresult" > 40.1< / td > < td class = "benchmarkresult" > 196< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L577" > BuildTypeNameSim 10/10< / a > < span class = "tooltiptext code" > stringa buildTypeNameSim(ssa type_name, size_t prec, size_t scale) {
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if (prec) {
return type_name + " (" + prec + e_if(scale, " ," _ss + scale) + " )" ;
}
return type_name;
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 22.9< / td > < td class = "benchmarkresult" > 23.6< / td > < td class = "benchmarkresult" > 25.6< / td > < td class = "benchmarkresult" > 40.1< / td > < td class = "benchmarkresult" > 141< / td > < / tr >
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' B u i l d T y p e N a m e ' ] = { i d : ' b s 7 ' , t e s t s : [
{name:'BuildTypeNameStr 0/0',data:[7.65,10.1,8.48,18.1,27.4]},
{name:'BuildTypeNameExp 0/0',data:[6.50,8.75,7.64,14.5,28.9]},
{name:'BuildTypeNameSim 0/0',data:[4.14,4.90,7.75,16.3,38.4]},
{name:'BuildTypeNameStr 10/10',data:[56.9,84.3,59.6,85.7,652]},
{name:'BuildTypeNameExp 10/10',data:[29.9,25.9,33.3,40.1,196]},
{name:'BuildTypeNameSim 10/10',data:[22.9,23.6,25.6,40.1,141]}
2026-01-21 11:59:17 +00:00
]}< / script >
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< div class = "benchset" id = "bs8" > < h4 > < a id = "bs54035654251116789780" href = "#bs54035654251116789780" > #< / a > Replace string by copy< / h4 >
2026-02-08 11:17:03 +00:00
< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-14 10:09:54 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L631" > Concat with replace str< / a > < span class = "tooltiptext code" > std::string make_str_str(std::string_view from, std::string_view pattern, std::string_view repl) {
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auto str_replace = [](std::string_view from, std::string_view pattern, std::string_view repl) {
std::string result;
for (size_t offset = 0; ;) {
size_t pos = from.find(pattern, offset);
if (pos == std::string::npos) {
result += from.substr(offset);
break;
}
result += from.substr(offset, pos - offset);
result += repl;
offset = pos + pattern.length();
}
return result;
};
return " < " + str_replace(from, pattern, repl) + " >" ;
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 200< / td > < td class = "benchmarkresult" > 250< / td > < td class = "benchmarkresult" > 308< / td > < td class = "benchmarkresult" > 366< / td > < td class = "benchmarkresult" > 1074< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L649" > Concat with replace exp< / a > < span class = "tooltiptext code" > std::string make_str_exp(std::string_view from, std::string_view pattern, std::string_view repl) {
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return " < " + e_repl(from, pattern, repl) + " >" ;
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > В
есть "из коробки".
2026-02-14 10:09:54 +00:00
simstr has a string expression for replacing substrings out of the box.< / span > < / span > < / td > < td class = "benchmarkresult" > 147< / td > < td class = "benchmarkresult" > 133< / td > < td class = "benchmarkresult" > 222< / td > < td class = "benchmarkresult" > 221< / td > < td class = "benchmarkresult" > 519< / td > < / tr >
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' R e p l a c e s t r i n g b y c o p y ' ] = { i d : ' b s 8 ' , t e s t s : [
{name:'Concat with replace str',data:[200,250,308,366,1074]},
{name:'Concat with replace exp',data:[147,133,222,221,519]}
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]}< / script >
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< div class = "benchset" id = "bs9" > < h4 > < a id = "bs77666948964429305550" href = "#bs77666948964429305550" > #< / a > Create Empty Str< / h4 >
2026-02-08 11:17:03 +00:00
< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-14 10:09:54 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L683" > std::string e;< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CreateEmpty(benchmark::State& state) {
for (auto _: state) {
T empty_string;
benchmark::DoNotOptimize(empty_string);
}
2026-01-21 11:59:17 +00:00
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Пустые строки, ничего необычного.
2026-02-14 10:09:54 +00:00
Empty lines, nothing unusual.< / span > < / span > < / td > < td class = "benchmarkresult" > 1.11< / td > < td class = "benchmarkresult" > 1.09< / td > < td class = "benchmarkresult" > 1.14< / td > < td class = "benchmarkresult" > 3.25< / td > < td class = "benchmarkresult" > 2.60< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L683" > std::string_view e;< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CreateEmpty(benchmark::State& state) {
for (auto _: state) {
T empty_string;
benchmark::DoNotOptimize(empty_string);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 0.375< / td > < td class = "benchmarkresult" > 0.739< / td > < td class = "benchmarkresult" > 0.372< / td > < td class = "benchmarkresult" > 1.85< / td > < td class = "benchmarkresult" > 2.15< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L683" > ssa e;< / a > < span class = "tooltiptext code" > template< typename T>
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void CreateEmpty(benchmark::State& state) {
for (auto _: state) {
T empty_string;
benchmark::DoNotOptimize(empty_string);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 0.361< / td > < td class = "benchmarkresult" > 0.183< / td > < td class = "benchmarkresult" > 0.359< / td > < td class = "benchmarkresult" > 1.45< / td > < td class = "benchmarkresult" > 2.16< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L683" > stringa e;< / a > < span class = "tooltiptext code" > template< typename T>
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void CreateEmpty(benchmark::State& state) {
for (auto _: state) {
T empty_string;
benchmark::DoNotOptimize(empty_string);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 0.753< / td > < td class = "benchmarkresult" > 0.731< / td > < td class = "benchmarkresult" > 0.736< / td > < td class = "benchmarkresult" > 2.20< / td > < td class = "benchmarkresult" > 5.52< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L683" > lstringa< 20> e;< / a > < span class = "tooltiptext code" > template< typename T>
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void CreateEmpty(benchmark::State& state) {
for (auto _: state) {
T empty_string;
benchmark::DoNotOptimize(empty_string);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1.20< / td > < td class = "benchmarkresult" > 1.11< / td > < td class = "benchmarkresult" > 1.11< / td > < td class = "benchmarkresult" > 2.59< / td > < td class = "benchmarkresult" > 9.16< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L683" > lstringa< 40> e;< / a > < span class = "tooltiptext code" > template< typename T>
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void CreateEmpty(benchmark::State& state) {
for (auto _: state) {
T empty_string;
benchmark::DoNotOptimize(empty_string);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1.13< / td > < td class = "benchmarkresult" > 1.11< / td > < td class = "benchmarkresult" > 1.10< / td > < td class = "benchmarkresult" > 2.62< / td > < td class = "benchmarkresult" > 8.53< / td > < / tr >
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' C r e a t e E m p t y S t r ' ] = { i d : ' b s 9 ' , t e s t s : [
{name:'std::string e;',data:[1.11,1.09,1.14,3.25,2.60]},
{name:'std::string_view e;',data:[0.375,0.739,0.372,1.85,2.15]},
{name:'ssa e;',data:[0.361,0.183,0.359,1.45,2.16]},
{name:'stringa e;',data:[0.753,0.731,0.736,2.20,5.52]},
{name:'lstringa< 20 > e;',data:[1.20,1.11,1.11,2.59,9.16]},
{name:'lstringa< 40 > e;',data:[1.13,1.11,1.10,2.62,8.53]}
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]}< / script >
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< div class = "benchset" id = "bs10" > < h4 > < a id = "bs181001525395597238060" href = "#bs181001525395597238060" > #< / a > Create Str from short literal (9 symbols)< / h4 >
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< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
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< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L698" > std::string e = " Test text" ;< / a > < span class = "tooltiptext code" > template< typename T>
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void CreateShortLiteral(benchmark::State& state) {
for (auto _: state) {
T empty_string = TEST_TEXT;
benchmark::DoNotOptimize(empty_string);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Короткий литерал помещается во внутренний буфер std::string,
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время тратится только на копирование 10 байтов.
The short literal is placed in the internal std::string buffer;
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time is spent only copying 10 bytes.< / span > < / span > < / td > < td class = "benchmarkresult" > 1.81< / td > < td class = "benchmarkresult" > 1.84< / td > < td class = "benchmarkresult" > 1.81< / td > < td class = "benchmarkresult" > 2.67< / td > < td class = "benchmarkresult" > 10.4< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L698" > std::string_view e = " Test text" ;< / a > < span class = "tooltiptext code" > template< typename T>
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void CreateShortLiteral(benchmark::State& state) {
for (auto _: state) {
T empty_string = TEST_TEXT;
benchmark::DoNotOptimize(empty_string);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > И string_view, и ssa - по сути одно и то же:
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указатель на текст и е г о
Both string_view and ssa are essentially the same thing:
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a pointer to text and its length.< / span > < / span > < / td > < td class = "benchmarkresult" > 0.731< / td > < td class = "benchmarkresult" > 0.736< / td > < td class = "benchmarkresult" > 0.734< / td > < td class = "benchmarkresult" > 1.84< / td > < td class = "benchmarkresult" > 2.18< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L698" > ssa e = " Test text" ;< / a > < span class = "tooltiptext code" > template< typename T>
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void CreateShortLiteral(benchmark::State& state) {
for (auto _: state) {
T empty_string = TEST_TEXT;
benchmark::DoNotOptimize(empty_string);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 0.367< / td > < td class = "benchmarkresult" > 0.750< / td > < td class = "benchmarkresult" > 0.364< / td > < td class = "benchmarkresult" > 1.87< / td > < td class = "benchmarkresult" > 2.17< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L698" > stringa e = " Test text" ;< / a > < span class = "tooltiptext code" > template< typename T>
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void CreateShortLiteral(benchmark::State& state) {
for (auto _: state) {
T empty_string = TEST_TEXT;
benchmark::DoNotOptimize(empty_string);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > stringa при инициализации константным литералом так же
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сохраняет только указатель на текст и е г о
When initialized with a constant literal, stringa also stores
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only a pointer to the text and its length.< / span > < / span > < / td > < td class = "benchmarkresult" > 1.11< / td > < td class = "benchmarkresult" > 1.11< / td > < td class = "benchmarkresult" > 1.11< / td > < td class = "benchmarkresult" > 2.86< / td > < td class = "benchmarkresult" > 8.30< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L698" > lstringa< 20> e = " Test text" ;< / a > < span class = "tooltiptext code" > template< typename T>
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void CreateShortLiteral(benchmark::State& state) {
for (auto _: state) {
T empty_string = TEST_TEXT;
benchmark::DoNotOptimize(empty_string);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Внутреннего буфера хватает для размещения символов,
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время уходит только на копирование байтов.
The internal buffer is sufficient to accommodate characters;
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time is spent only on copying bytes.< / span > < / span > < / td > < td class = "benchmarkresult" > 1.85< / td > < td class = "benchmarkresult" > 1.84< / td > < td class = "benchmarkresult" > 1.87< / td > < td class = "benchmarkresult" > 2.55< / td > < td class = "benchmarkresult" > 3.89< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L698" > lstringa< 40> e = " Test text" ;< / a > < span class = "tooltiptext code" > template< typename T>
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void CreateShortLiteral(benchmark::State& state) {
for (auto _: state) {
T empty_string = TEST_TEXT;
benchmark::DoNotOptimize(empty_string);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1.88< / td > < td class = "benchmarkresult" > 1.84< / td > < td class = "benchmarkresult" > 1.94< / td > < td class = "benchmarkresult" > 2.53< / td > < td class = "benchmarkresult" > 3.93< / td > < / tr >
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' C r e a t e S t r f r o m s h o r t l i t e r a l ( 9 s y m b o l s ) ' ] = { i d : ' b s 1 0 ' , t e s t s : [
{name:'std::string e = "Test text";',data:[1.81,1.84,1.81,2.67,10.4]},
{name:'std::string_view e = "Test text";',data:[0.731,0.736,0.734,1.84,2.18]},
{name:'ssa e = "Test text";',data:[0.367,0.750,0.364,1.87,2.17]},
{name:'stringa e = "Test text";',data:[1.11,1.11,1.11,2.86,8.30]},
{name:'lstringa< 20 > e = "Test text";',data:[1.85,1.84,1.87,2.55,3.89]},
{name:'lstringa< 40 > e = "Test text";',data:[1.88,1.84,1.94,2.53,3.93]}
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]}< / script >
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< div class = "benchset" id = "bs11" > < h4 > < a id = "bs132333183298742730280" href = "#bs132333183298742730280" > #< / a > Create Str from long literal (30 symbols)< / h4 >
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< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
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< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L713" > std::string e = " 123456789012345678901234567890" ;< / a > < span class = "tooltiptext code" > template< typename T>
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void CreateLongLiteral(benchmark::State& state) {
for (auto _: state) {
T empty_string{LONG_TEXT};
benchmark::DoNotOptimize(empty_string);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Вот тут уже литерал не помещается во внутренний буфер,
возникает аллокация и копирование 30-и байтов.
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Н о а
Here, the literal doesn't fit into the internal buffer,
and 30 bytes are allocated and copied.
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But how much slower is allocation under Windows than under Linux, 20 ns vs. 70 ns...< / span > < / span > < / td > < td class = "benchmarkresult" > 19.1< / td > < td class = "benchmarkresult" > 19.2< / td > < td class = "benchmarkresult" > 73.4< / td > < td class = "benchmarkresult" > 73.6< / td > < td class = "benchmarkresult" > 68.6< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L713" > std::string_view e = " 123456789012345678901234567890" ;< / a > < span class = "tooltiptext code" > template< typename T>
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void CreateLongLiteral(benchmark::State& state) {
for (auto _: state) {
T empty_string{LONG_TEXT};
benchmark::DoNotOptimize(empty_string);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > string_view и ssa по прежнему ничего не делают, кроме
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запоминания указателя на текст и е г о
string_view and ssa still do nothing except
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remember the pointer to the text and its size.< / span > < / span > < / td > < td class = "benchmarkresult" > 0.762< / td > < td class = "benchmarkresult" > 0.752< / td > < td class = "benchmarkresult" > 0.750< / td > < td class = "benchmarkresult" > 1.83< / td > < td class = "benchmarkresult" > 2.19< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L713" > ssa e = " 123456789012345678901234567890" ;< / a > < span class = "tooltiptext code" > template< typename T>
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void CreateLongLiteral(benchmark::State& state) {
for (auto _: state) {
T empty_string{LONG_TEXT};
benchmark::DoNotOptimize(empty_string);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 0.369< / td > < td class = "benchmarkresult" > 0.733< / td > < td class = "benchmarkresult" > 0.360< / td > < td class = "benchmarkresult" > 1.81< / td > < td class = "benchmarkresult" > 2.18< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L713" > stringa e = " 123456789012345678901234567890" ;< / a > < span class = "tooltiptext code" > template< typename T>
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void CreateLongLiteral(benchmark::State& state) {
for (auto _: state) {
T empty_string{LONG_TEXT};
benchmark::DoNotOptimize(empty_string);
}
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}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > stringa на константных литералах не отстает!
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stringa doesn't lag behind on constant literals!< / span > < / span > < / td > < td class = "benchmarkresult" > 1.09< / td > < td class = "benchmarkresult" > 1.11< / td > < td class = "benchmarkresult" > 1.08< / td > < td class = "benchmarkresult" > 2.54< / td > < td class = "benchmarkresult" > 8.30< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L713" > lstringa< 20> e = " 123456789012345678901234567890" ;< / a > < span class = "tooltiptext code" > template< typename T>
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void CreateLongLiteral(benchmark::State& state) {
for (auto _: state) {
T empty_string{LONG_TEXT};
benchmark::DoNotOptimize(empty_string);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > lstringa< 20 > может вместить в себя до 23 символов,
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Очевидно, что для 30-и символов уже нужна аллокация.
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Obviously, 30 characters already require allocation.< / span > < / span > < / td > < td class = "benchmarkresult" > 21.0< / td > < td class = "benchmarkresult" > 20.4< / td > < td class = "benchmarkresult" > 73.6< / td > < td class = "benchmarkresult" > 75.1< / td > < td class = "benchmarkresult" > 68.6< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L713" > lstringa< 40> e = " 123456789012345678901234567890" ;< / a > < span class = "tooltiptext code" > template< typename T>
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void CreateLongLiteral(benchmark::State& state) {
for (auto _: state) {
T empty_string{LONG_TEXT};
benchmark::DoNotOptimize(empty_string);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > А < 40 > влезает до 47 символов, так что просто
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копируется 30 байтов.
And lstringa< 40 > can hold up to 47 characters, so 30
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bytes are simply copied.< / span > < / span > < / td > < td class = "benchmarkresult" > 2.54< / td > < td class = "benchmarkresult" > 1.82< / td > < td class = "benchmarkresult" > 2.50< / td > < td class = "benchmarkresult" > 3.27< / td > < td class = "benchmarkresult" > 11.4< / td > < / tr >
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' C r e a t e S t r f r o m l o n g l i t e r a l ( 3 0 s y m b o l s ) ' ] = { i d : ' b s 1 1 ' , t e s t s : [
{name:'std::string e = "123456789012345678901234567890";',data:[19.1,19.2,73.4,73.6,68.6]},
{name:'std::string_view e = "123456789012345678901234567890";',data:[0.762,0.752,0.750,1.83,2.19]},
{name:'ssa e = "123456789012345678901234567890";',data:[0.369,0.733,0.360,1.81,2.18]},
{name:'stringa e = "123456789012345678901234567890";',data:[1.09,1.11,1.08,2.54,8.30]},
{name:'lstringa< 20 > e = "123456789012345678901234567890";',data:[21.0,20.4,73.6,75.1,68.6]},
{name:'lstringa< 40 > e = "123456789012345678901234567890";',data:[2.54,1.82,2.50,3.27,11.4]}
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]}< / script >
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< div class = "benchset" id = "bs12" > < h4 > < a id = "bs6234433963744178700" href = "#bs6234433963744178700" > #< / a > Create copy of Str with 9 symbols< / h4 >
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< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
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< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L728" > std::string e = " Test text" ; auto c{e};< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyShortString(benchmark::State& state) {
T x{TEST_TEXT};
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Строка в пределах SSO, так что просто копирует байты.
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The string is within the SSO, so it just copies the bytes.< / span > < / span > < / td > < td class = "benchmarkresult" > 5.58< / td > < td class = "benchmarkresult" > 5.62< / td > < td class = "benchmarkresult" > 1.82< / td > < td class = "benchmarkresult" > 5.10< / td > < td class = "benchmarkresult" > 7.32< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L728" > std::string_view e = " Test text" ; auto c{e};< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyShortString(benchmark::State& state) {
T x{TEST_TEXT};
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 0.370< / td > < td class = "benchmarkresult" > 0.365< / td > < td class = "benchmarkresult" > 0.363< / td > < td class = "benchmarkresult" > 3.79< / td > < td class = "benchmarkresult" > 2.17< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L728" > ssa e = " Test text" ; auto c{e};< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyShortString(benchmark::State& state) {
T x{TEST_TEXT};
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > ssa и string_view не владеют строкой, копируется
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только информация о
ssa and string_view don't own the string; only the
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string information is copied.< / span > < / span > < / td > < td class = "benchmarkresult" > 0.372< / td > < td class = "benchmarkresult" > 0.374< / td > < td class = "benchmarkresult" > 0.366< / td > < td class = "benchmarkresult" > 3.85< / td > < td class = "benchmarkresult" > 2.18< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L728" > stringa e = " Test text" ; auto c{e};< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyShortString(benchmark::State& state) {
T x{TEST_TEXT};
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Копирование stringa происходит быстро,
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особенно если она инициализирована литералом.
Copying a stringa is fast,
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especially if it is initialized with a literal.< / span > < / span > < / td > < td class = "benchmarkresult" > 1.11< / td > < td class = "benchmarkresult" > 1.11< / td > < td class = "benchmarkresult" > 1.28< / td > < td class = "benchmarkresult" > 4.00< / td > < td class = "benchmarkresult" > 6.33< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L728" > lstringa< 20> e = " Test text" ; auto c{e};< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyShortString(benchmark::State& state) {
T x{TEST_TEXT};
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > В
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In both cases, the internal buffer is sufficient.< / span > < / span > < / td > < td class = "benchmarkresult" > 1.49< / td > < td class = "benchmarkresult" > 1.11< / td > < td class = "benchmarkresult" > 1.50< / td > < td class = "benchmarkresult" > 4.38< / td > < td class = "benchmarkresult" > 7.15< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L728" > lstringa< 40> e = " Test text" ; auto c{e};< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyShortString(benchmark::State& state) {
T x{TEST_TEXT};
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Только копируются байты.
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Only bytes are copied.< / span > < / span > < / td > < td class = "benchmarkresult" > 1.48< / td > < td class = "benchmarkresult" > 1.13< / td > < td class = "benchmarkresult" > 1.47< / td > < td class = "benchmarkresult" > 4.52< / td > < td class = "benchmarkresult" > 7.33< / td > < / tr >
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' C r e a t e c o p y o f S t r w i t h 9 s y m b o l s ' ] = { i d : ' b s 1 2 ' , t e s t s : [
{name:'std::string e = "Test text"; auto c{e};',data:[5.58,5.62,1.82,5.10,7.32]},
{name:'std::string_view e = "Test text"; auto c{e};',data:[0.370,0.365,0.363,3.79,2.17]},
{name:'ssa e = "Test text"; auto c{e};',data:[0.372,0.374,0.366,3.85,2.18]},
{name:'stringa e = "Test text"; auto c{e};',data:[1.11,1.11,1.28,4.00,6.33]},
{name:'lstringa< 20 > e = "Test text"; auto c{e};',data:[1.49,1.11,1.50,4.38,7.15]},
{name:'lstringa< 40 > e = "Test text"; auto c{e};',data:[1.48,1.13,1.47,4.52,7.33]}
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]}< / script >
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< div class = "benchset" id = "bs13" > < h4 > < a id = "bs76384575499199461500" href = "#bs76384575499199461500" > #< / a > Create copy of Str with 30 symbols< / h4 >
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< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
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< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L745" > std::string e = " 123456789012345678901234567890" ; auto c{e};< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyLongString(benchmark::State& state) {
T x = LONG_TEXT;
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Копирования длинной строки вызывает аллокацию,
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SSO уже не хватает. И снова как же отстаёт аллокация под Windows...
Copying a long string causes allocations,
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SSO is no longer sufficient. And again, how allocation lags under Windows...< / span > < / span > < / td > < td class = "benchmarkresult" > 19.0< / td > < td class = "benchmarkresult" > 23.8< / td > < td class = "benchmarkresult" > 75.8< / td > < td class = "benchmarkresult" > 78.3< / td > < td class = "benchmarkresult" > 120< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L745" > std::string_view e = " 123456789012345678901234567890" ; auto c{e};< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyLongString(benchmark::State& state) {
T x = LONG_TEXT;
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 0.761< / td > < td class = "benchmarkresult" > 0.735< / td > < td class = "benchmarkresult" > 0.735< / td > < td class = "benchmarkresult" > 1.85< / td > < td class = "benchmarkresult" > 2.22< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L745" > ssa e = " 123456789012345678901234567890" ; auto c{e};< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyLongString(benchmark::State& state) {
T x = LONG_TEXT;
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 0.366< / td > < td class = "benchmarkresult" > 0.742< / td > < td class = "benchmarkresult" > 0.361< / td > < td class = "benchmarkresult" > 1.81< / td > < td class = "benchmarkresult" > 2.16< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L745" > stringa e = " 123456789012345678901234567890" ; auto c{e};< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyLongString(benchmark::State& state) {
T x = LONG_TEXT;
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > А у е г о
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сравни с
But with stringa, literal copying doesn't depend on its length,
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compare with the previous benchmark.< / span > < / span > < / td > < td class = "benchmarkresult" > 1.11< / td > < td class = "benchmarkresult" > 1.30< / td > < td class = "benchmarkresult" > 1.82< / td > < td class = "benchmarkresult" > 2.93< / td > < td class = "benchmarkresult" > 8.35< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L745" > lstringa< 20> e = " 123456789012345678901234567890" ; auto c{e};< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyLongString(benchmark::State& state) {
T x = LONG_TEXT;
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
}
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}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Н е
2026-02-14 10:09:54 +00:00
Doesn't fit, allocation.< / span > < / span > < / td > < td class = "benchmarkresult" > 21.0< / td > < td class = "benchmarkresult" > 19.8< / td > < td class = "benchmarkresult" > 75.1< / td > < td class = "benchmarkresult" > 82.0< / td > < td class = "benchmarkresult" > 67.2< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L745" > lstringa< 40> e = " 123456789012345678901234567890" ; auto c{e};< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyLongString(benchmark::State& state) {
T x = LONG_TEXT;
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
}
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}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Уложили во внутренний буфер.
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Placed in the internal buffer.< / span > < / span > < / td > < td class = "benchmarkresult" > 4.83< / td > < td class = "benchmarkresult" > 4.67< / td > < td class = "benchmarkresult" > 4.73< / td > < td class = "benchmarkresult" > 7.56< / td > < td class = "benchmarkresult" > 19.7< / td > < / tr >
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' C r e a t e c o p y o f S t r w i t h 3 0 s y m b o l s ' ] = { i d : ' b s 1 3 ' , t e s t s : [
{name:'std::string e = "123456789012345678901234567890"; auto c{e};',data:[19.0,23.8,75.8,78.3,120]},
{name:'std::string_view e = "123456789012345678901234567890"; auto c{e};',data:[0.761,0.735,0.735,1.85,2.22]},
{name:'ssa e = "123456789012345678901234567890"; auto c{e};',data:[0.366,0.742,0.361,1.81,2.16]},
{name:'stringa e = "123456789012345678901234567890"; auto c{e};',data:[1.11,1.30,1.82,2.93,8.35]},
{name:'lstringa< 20 > e = "123456789012345678901234567890"; auto c{e};',data:[21.0,19.8,75.1,82.0,67.2]},
{name:'lstringa< 40 > e = "123456789012345678901234567890"; auto c{e};',data:[4.83,4.67,4.73,7.56,19.7]}
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]}< / script >
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< div class = "benchset" id = "bs14" > < h4 > < a id = "bs21623892135774528620" href = "#bs21623892135774528620" > #< / a > Find 9 symbols text in end of 99 symbols text< / h4 >
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< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
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< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L762" > sz::string::find;< / a > < span class = "tooltiptext code" > template< typename T>
void Find(benchmark::State& state) {
T x{LONG_TEXT LONG_TEXT LONG_TEXT TEST_TEXT};
for (auto _: state) {
int i = (int)x.find(TEST_TEXT);
#ifdef CHECK_RESULT
if (i != 90) {
state.SkipWithError(" not find?" );
break;
}
#endif
benchmark::DoNotOptimize(i);
benchmark::DoNotOptimize(x);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > stringzilla более заточена на поиск больших строк в больших строках.
stringzilla is more focused on searching large strings within large strings.< / span > < / span > < / td > < td class = "benchmarkresult" > 93.4< / td > < td class = "benchmarkresult" > 93.8< / td > < td class = "benchmarkresult" > 98.8< / td > < td class = "benchmarkresult" > 115< / td > < td class = "benchmarkresult" > 227< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L762" > std::string::find;< / a > < span class = "tooltiptext code" > template< typename T>
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void Find(benchmark::State& state) {
T x{LONG_TEXT LONG_TEXT LONG_TEXT TEST_TEXT};
for (auto _: state) {
int i = (int)x.find(TEST_TEXT);
#ifdef CHECK_RESULT
if (i != 90) {
state.SkipWithError(" not find?" );
break;
}
#endif
benchmark::DoNotOptimize(i);
benchmark::DoNotOptimize(x);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Здесь "победила дружба", у
2026-01-21 11:59:17 +00:00
Однако, Windows и Linux явно в разных весовых категориях.
Here, "friendship wins," with all types scoring roughly equally.
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However, Windows and Linux are clearly in different weight classes.< / span > < / span > < / td > < td class = "benchmarkresult" > 7.54< / td > < td class = "benchmarkresult" > 7.67< / td > < td class = "benchmarkresult" > 39.3< / td > < td class = "benchmarkresult" > 39.0< / td > < td class = "benchmarkresult" > 99.1< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L762" > std::string_view::find;< / a > < span class = "tooltiptext code" > template< typename T>
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void Find(benchmark::State& state) {
T x{LONG_TEXT LONG_TEXT LONG_TEXT TEST_TEXT};
for (auto _: state) {
int i = (int)x.find(TEST_TEXT);
#ifdef CHECK_RESULT
if (i != 90) {
state.SkipWithError(" not find?" );
break;
}
#endif
benchmark::DoNotOptimize(i);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 6.70< / td > < td class = "benchmarkresult" > 7.48< / td > < td class = "benchmarkresult" > 52.1< / td > < td class = "benchmarkresult" > 40.1< / td > < td class = "benchmarkresult" > 97.5< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L762" > ssa::find;< / a > < span class = "tooltiptext code" > template< typename T>
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void Find(benchmark::State& state) {
T x{LONG_TEXT LONG_TEXT LONG_TEXT TEST_TEXT};
for (auto _: state) {
int i = (int)x.find(TEST_TEXT);
#ifdef CHECK_RESULT
if (i != 90) {
state.SkipWithError(" not find?" );
break;
}
#endif
benchmark::DoNotOptimize(i);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 7.49< / td > < td class = "benchmarkresult" > 6.78< / td > < td class = "benchmarkresult" > 19.5< / td > < td class = "benchmarkresult" > 21.4< / td > < td class = "benchmarkresult" > 96.3< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L762" > stringa::find;< / a > < span class = "tooltiptext code" > template< typename T>
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void Find(benchmark::State& state) {
T x{LONG_TEXT LONG_TEXT LONG_TEXT TEST_TEXT};
for (auto _: state) {
int i = (int)x.find(TEST_TEXT);
#ifdef CHECK_RESULT
if (i != 90) {
state.SkipWithError(" not find?" );
break;
}
#endif
benchmark::DoNotOptimize(i);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 7.84< / td > < td class = "benchmarkresult" > 7.17< / td > < td class = "benchmarkresult" > 18.9< / td > < td class = "benchmarkresult" > 30.1< / td > < td class = "benchmarkresult" > 97.2< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L762" > lstringa< 20>::find;< / a > < span class = "tooltiptext code" > template< typename T>
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void Find(benchmark::State& state) {
T x{LONG_TEXT LONG_TEXT LONG_TEXT TEST_TEXT};
for (auto _: state) {
int i = (int)x.find(TEST_TEXT);
#ifdef CHECK_RESULT
if (i != 90) {
state.SkipWithError(" not find?" );
break;
}
#endif
benchmark::DoNotOptimize(i);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 7.38< / td > < td class = "benchmarkresult" > 6.96< / td > < td class = "benchmarkresult" > 17.6< / td > < td class = "benchmarkresult" > 22.0< / td > < td class = "benchmarkresult" > 97.6< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L762" > lstringa< 40>::find;< / a > < span class = "tooltiptext code" > template< typename T>
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void Find(benchmark::State& state) {
T x{LONG_TEXT LONG_TEXT LONG_TEXT TEST_TEXT};
for (auto _: state) {
int i = (int)x.find(TEST_TEXT);
#ifdef CHECK_RESULT
if (i != 90) {
state.SkipWithError(" not find?" );
break;
}
#endif
benchmark::DoNotOptimize(i);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 7.02< / td > < td class = "benchmarkresult" > 6.64< / td > < td class = "benchmarkresult" > 18.2< / td > < td class = "benchmarkresult" > 20.7< / td > < td class = "benchmarkresult" > 96.0< / td > < / tr >
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' F i n d 9 s y m b o l s t e x t i n e n d o f 9 9 s y m b o l s t e x t ' ] = { i d : ' b s 1 4 ' , t e s t s : [
{name:'sz::string::find;',data:[93.4,93.8,98.8,115,227]},
{name:'std::string::find;',data:[7.54,7.67,39.3,39.0,99.1]},
{name:'std::string_view::find;',data:[6.70,7.48,52.1,40.1,97.5]},
{name:'ssa::find;',data:[7.49,6.78,19.5,21.4,96.3]},
{name:'stringa::find;',data:[7.84,7.17,18.9,30.1,97.2]},
{name:'lstringa< 20 > ::find;',data:[7.38,6.96,17.6,22.0,97.6]},
{name:'lstringa< 40 > ::find;',data:[7.02,6.64,18.2,20.7,96.0]}
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]}< / script >
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< div class = "benchset" id = "bs15" > < h4 > < a id = "bs170792414351801782640" href = "#bs170792414351801782640" > #< / a > Copy not literal Str with N symbols< / h4 >
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< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
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< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > std::string copy{str_with_len_N};/15< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 4.87< / td > < td class = "benchmarkresult" > 7.91< / td > < td class = "benchmarkresult" > 1.83< / td > < td class = "benchmarkresult" > 4.42< / td > < td class = "benchmarkresult" > 125< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > std::string copy{str_with_len_N};/16< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Явно виден скачок, где заканчивается SSO и начинается аллокация.
Обратите внимание, что WASM - 32-битный, и там размер
2026-02-12 16:47:32 +00:00
SSO у
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The jump where SSO ends and allocation begins is clearly visible.
Note that WASM is 32-bit, and the size of the SSO for std::string is
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smaller, as far as I remember: 11 characters + 0.< / span > < / span > < / td > < td class = "benchmarkresult" > 23.2< / td > < td class = "benchmarkresult" > 26.5< / td > < td class = "benchmarkresult" > 80.8< / td > < td class = "benchmarkresult" > 81.3< / td > < td class = "benchmarkresult" > 123< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > std::string copy{str_with_len_N};/23< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Дальше просто добавляется время на копирование байтов.
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Then the time for copying bytes is simply added.< / span > < / span > < / td > < td class = "benchmarkresult" > 23.5< / td > < td class = "benchmarkresult" > 27.3< / td > < td class = "benchmarkresult" > 78.3< / td > < td class = "benchmarkresult" > 78.6< / td > < td class = "benchmarkresult" > 128< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > std::string copy{str_with_len_N};/24< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 22.6< / td > < td class = "benchmarkresult" > 27.7< / td > < td class = "benchmarkresult" > 78.5< / td > < td class = "benchmarkresult" > 79.8< / td > < td class = "benchmarkresult" > 120< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > std::string copy{str_with_len_N};/32< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 22.6< / td > < td class = "benchmarkresult" > 26.5< / td > < td class = "benchmarkresult" > 81.8< / td > < td class = "benchmarkresult" > 83.8< / td > < td class = "benchmarkresult" > 128< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > std::string copy{str_with_len_N};/64< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 22.3< / td > < td class = "benchmarkresult" > 26.9< / td > < td class = "benchmarkresult" > 82.8< / td > < td class = "benchmarkresult" > 81.7< / td > < td class = "benchmarkresult" > 131< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > std::string copy{str_with_len_N};/128< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 23.7< / td > < td class = "benchmarkresult" > 28.9< / td > < td class = "benchmarkresult" > 82.6< / td > < td class = "benchmarkresult" > 87.7< / td > < td class = "benchmarkresult" > 132< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > std::string copy{str_with_len_N};/256< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 24.9< / td > < td class = "benchmarkresult" > 28.8< / td > < td class = "benchmarkresult" > 85.0< / td > < td class = "benchmarkresult" > 88.5< / td > < td class = "benchmarkresult" > 161< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > std::string copy{str_with_len_N};/512< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 28.5< / td > < td class = "benchmarkresult" > 33.6< / td > < td class = "benchmarkresult" > 86.5< / td > < td class = "benchmarkresult" > 92.7< / td > < td class = "benchmarkresult" > 149< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > std::string copy{str_with_len_N};/1024< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 34.8< / td > < td class = "benchmarkresult" > 44.2< / td > < td class = "benchmarkresult" > 95.3< / td > < td class = "benchmarkresult" > 97.1< / td > < td class = "benchmarkresult" > 156< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > std::string copy{str_with_len_N};/2048< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 79.1< / td > < td class = "benchmarkresult" > 80.3< / td > < td class = "benchmarkresult" > 133< / td > < td class = "benchmarkresult" > 129< / td > < td class = "benchmarkresult" > 206< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > std::string copy{str_with_len_N};/4096< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Чем длиннее строка, тем дольше создаётся копия.
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The longer the string, the longer it takes to create a copy.< / span > < / span > < / td > < td class = "benchmarkresult" > 111< / td > < td class = "benchmarkresult" > 115< / td > < td class = "benchmarkresult" > 179< / td > < td class = "benchmarkresult" > 180< / td > < td class = "benchmarkresult" > 271< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > stringa copy{str_with_len_N};/15< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Здесь stringa инициализируется не литералом,
2026-01-21 11:59:17 +00:00
а
Here, stringa is not initialized with a literal,
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meaning it must store characters itself.< / span > < / span > < / td > < td class = "benchmarkresult" > 1.09< / td > < td class = "benchmarkresult" > 1.09< / td > < td class = "benchmarkresult" > 1.29< / td > < td class = "benchmarkresult" > 4.00< / td > < td class = "benchmarkresult" > 4.60< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > stringa copy{str_with_len_N};/16< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Под WASM SSO у
2026-01-21 11:59:17 +00:00
собиралось без поддержки потоков, поэтому атомарный
инкремент заменён на обычный, судя по времени.
Under WASM, stringa has a 15-character SSO. Furthermore,
it was built without thread support, so the atomic
2026-02-14 10:09:54 +00:00
increment was replaced with a regular one, judging by the time.< / span > < / span > < / td > < td class = "benchmarkresult" > 1.13< / td > < td class = "benchmarkresult" > 1.10< / td > < td class = "benchmarkresult" > 1.32< / td > < td class = "benchmarkresult" > 4.02< / td > < td class = "benchmarkresult" > 7.36< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > stringa copy{str_with_len_N};/23< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > SSO в stringa до 23 символов, и даже 23
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копируются быстрее, чем 15 в std::string.
SSO in stringa is up to 23 characters, and even 23
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copies faster than 15 in std::string.< / span > < / span > < / td > < td class = "benchmarkresult" > 1.11< / td > < td class = "benchmarkresult" > 1.10< / td > < td class = "benchmarkresult" > 1.29< / td > < td class = "benchmarkresult" > 4.10< / td > < td class = "benchmarkresult" > 7.39< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > stringa copy{str_with_len_N};/24< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Всё, не влезаем в SSO, а
2026-01-21 11:59:17 +00:00
Добавляется время на атомарный инкремент счётчика.
That's it, we're not using SSO, so we're using a shared buffer.
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Time is added for the atomic counter increment.< / span > < / span > < / td > < td class = "benchmarkresult" > 15.9< / td > < td class = "benchmarkresult" > 16.1< / td > < td class = "benchmarkresult" > 15.8< / td > < td class = "benchmarkresult" > 18.4< / td > < td class = "benchmarkresult" > 7.35< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > stringa copy{str_with_len_N};/32< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 16.0< / td > < td class = "benchmarkresult" > 16.0< / td > < td class = "benchmarkresult" > 15.8< / td > < td class = "benchmarkresult" > 18.4< / td > < td class = "benchmarkresult" > 7.33< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > stringa copy{str_with_len_N};/64< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 16.0< / td > < td class = "benchmarkresult" > 16.1< / td > < td class = "benchmarkresult" > 15.8< / td > < td class = "benchmarkresult" > 18.3< / td > < td class = "benchmarkresult" > 7.37< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > stringa copy{str_with_len_N};/128< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 16.0< / td > < td class = "benchmarkresult" > 16.0< / td > < td class = "benchmarkresult" > 15.7< / td > < td class = "benchmarkresult" > 18.4< / td > < td class = "benchmarkresult" > 7.30< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > stringa copy{str_with_len_N};/256< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 16.0< / td > < td class = "benchmarkresult" > 15.9< / td > < td class = "benchmarkresult" > 15.8< / td > < td class = "benchmarkresult" > 18.3< / td > < td class = "benchmarkresult" > 7.33< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > stringa copy{str_with_len_N};/512< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 16.0< / td > < td class = "benchmarkresult" > 16.0< / td > < td class = "benchmarkresult" > 15.7< / td > < td class = "benchmarkresult" > 18.2< / td > < td class = "benchmarkresult" > 7.44< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > stringa copy{str_with_len_N};/1024< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 16.0< / td > < td class = "benchmarkresult" > 16.1< / td > < td class = "benchmarkresult" > 15.8< / td > < td class = "benchmarkresult" > 18.2< / td > < td class = "benchmarkresult" > 7.35< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > stringa copy{str_with_len_N};/2048< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 15.9< / td > < td class = "benchmarkresult" > 16.2< / td > < td class = "benchmarkresult" > 16.8< / td > < td class = "benchmarkresult" > 18.3< / td > < td class = "benchmarkresult" > 7.33< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > stringa copy{str_with_len_N};/4096< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > И как видно, кроме инкремента нет накладных расходов,
2026-01-21 11:59:17 +00:00
время копирования не зависит от длины строки.
And as you can see, there are no overhead costs other than the
2026-02-14 10:09:54 +00:00
increment; copying time does not depend on the string length.< / span > < / span > < / td > < td class = "benchmarkresult" > 15.9< / td > < td class = "benchmarkresult" > 16.0< / td > < td class = "benchmarkresult" > 15.7< / td > < td class = "benchmarkresult" > 18.3< / td > < td class = "benchmarkresult" > 7.36< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > lstringa< 16> copy{str_with_len_N};/15< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > lstringa< 16 > использует SSO до 23 символов.
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А
lstringa< 16 > uses SSO up to 23 characters.
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WASM has a 32-bit architecture, so SSO is up to 19 characters.< / span > < / span > < / td > < td class = "benchmarkresult" > 1.47< / td > < td class = "benchmarkresult" > 1.10< / td > < td class = "benchmarkresult" > 1.50< / td > < td class = "benchmarkresult" > 4.84< / td > < td class = "benchmarkresult" > 7.29< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > lstringa< 16> copy{str_with_len_N};/16< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 5.22< / td > < td class = "benchmarkresult" > 5.38< / td > < td class = "benchmarkresult" > 5.09< / td > < td class = "benchmarkresult" > 8.98< / td > < td class = "benchmarkresult" > 19.3< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > lstringa< 16> copy{str_with_len_N};/23< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 5.16< / td > < td class = "benchmarkresult" > 5.43< / td > < td class = "benchmarkresult" > 5.36< / td > < td class = "benchmarkresult" > 9.08< / td > < td class = "benchmarkresult" > 85.0< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > lstringa< 16> copy{str_with_len_N};/24< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
2026-01-21 11:59:17 +00:00
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > И после начинает вести себя при копировании, как std::string.
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And then it starts to behave like std::string when copied.< / span > < / span > < / td > < td class = "benchmarkresult" > 22.6< / td > < td class = "benchmarkresult" > 23.6< / td > < td class = "benchmarkresult" > 76.8< / td > < td class = "benchmarkresult" > 81.2< / td > < td class = "benchmarkresult" > 85.7< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > lstringa< 16> copy{str_with_len_N};/32< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 23.0< / td > < td class = "benchmarkresult" > 23.5< / td > < td class = "benchmarkresult" > 81.4< / td > < td class = "benchmarkresult" > 85.0< / td > < td class = "benchmarkresult" > 93.3< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > lstringa< 16> copy{str_with_len_N};/64< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 25.5< / td > < td class = "benchmarkresult" > 25.7< / td > < td class = "benchmarkresult" > 80.8< / td > < td class = "benchmarkresult" > 83.7< / td > < td class = "benchmarkresult" > 92.8< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > lstringa< 16> copy{str_with_len_N};/128< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 25.7< / td > < td class = "benchmarkresult" > 25.6< / td > < td class = "benchmarkresult" > 82.8< / td > < td class = "benchmarkresult" > 90.0< / td > < td class = "benchmarkresult" > 95.0< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > lstringa< 16> copy{str_with_len_N};/256< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 27.1< / td > < td class = "benchmarkresult" > 28.0< / td > < td class = "benchmarkresult" > 87.4< / td > < td class = "benchmarkresult" > 93.2< / td > < td class = "benchmarkresult" > 126< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > lstringa< 16> copy{str_with_len_N};/512< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 29.8< / td > < td class = "benchmarkresult" > 29.6< / td > < td class = "benchmarkresult" > 86.9< / td > < td class = "benchmarkresult" > 91.0< / td > < td class = "benchmarkresult" > 119< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > lstringa< 16> copy{str_with_len_N};/1024< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 51.8< / td > < td class = "benchmarkresult" > 56.5< / td > < td class = "benchmarkresult" > 93.4< / td > < td class = "benchmarkresult" > 98.2< / td > < td class = "benchmarkresult" > 120< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > lstringa< 16> copy{str_with_len_N};/2048< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 65.7< / td > < td class = "benchmarkresult" > 66.4< / td > < td class = "benchmarkresult" > 133< / td > < td class = "benchmarkresult" > 130< / td > < td class = "benchmarkresult" > 169< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > lstringa< 16> copy{str_with_len_N};/4096< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 86.4< / td > < td class = "benchmarkresult" > 87.0< / td > < td class = "benchmarkresult" > 189< / td > < td class = "benchmarkresult" > 183< / td > < td class = "benchmarkresult" > 236< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > lstringa< 512> copy{str_with_len_N};/15< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1.49< / td > < td class = "benchmarkresult" > 1.14< / td > < td class = "benchmarkresult" > 1.49< / td > < td class = "benchmarkresult" > 4.03< / td > < td class = "benchmarkresult" > 7.25< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > lstringa< 512> copy{str_with_len_N};/16< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 5.15< / td > < td class = "benchmarkresult" > 4.46< / td > < td class = "benchmarkresult" > 5.15< / td > < td class = "benchmarkresult" > 8.78< / td > < td class = "benchmarkresult" > 19.5< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > lstringa< 512> copy{str_with_len_N};/23< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 5.25< / td > < td class = "benchmarkresult" > 4.67< / td > < td class = "benchmarkresult" > 5.14< / td > < td class = "benchmarkresult" > 8.82< / td > < td class = "benchmarkresult" > 19.9< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > lstringa< 512> copy{str_with_len_N};/24< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 5.09< / td > < td class = "benchmarkresult" > 4.10< / td > < td class = "benchmarkresult" > 5.12< / td > < td class = "benchmarkresult" > 8.74< / td > < td class = "benchmarkresult" > 19.4< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > lstringa< 512> copy{str_with_len_N};/32< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 5.26< / td > < td class = "benchmarkresult" > 4.20< / td > < td class = "benchmarkresult" > 8.25< / td > < td class = "benchmarkresult" > 11.9< / td > < td class = "benchmarkresult" > 22.7< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > lstringa< 512> copy{str_with_len_N};/64< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 6.39< / td > < td class = "benchmarkresult" > 5.66< / td > < td class = "benchmarkresult" > 8.00< / td > < td class = "benchmarkresult" > 12.3< / td > < td class = "benchmarkresult" > 22.4< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > lstringa< 512> copy{str_with_len_N};/128< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 6.59< / td > < td class = "benchmarkresult" > 6.97< / td > < td class = "benchmarkresult" > 8.46< / td > < td class = "benchmarkresult" > 12.4< / td > < td class = "benchmarkresult" > 23.6< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > lstringa< 512> copy{str_with_len_N};/256< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 7.99< / td > < td class = "benchmarkresult" > 7.99< / td > < td class = "benchmarkresult" > 9.58< / td > < td class = "benchmarkresult" > 13.4< / td > < td class = "benchmarkresult" > 24.8< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > lstringa< 512> copy{str_with_len_N};/512< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Даже 512 символов копируются быстрее, чем
2026-01-21 11:59:17 +00:00
одна аллокация или атомарный инкремент.
Even 512 characters are copied faster than a single
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allocation or atomic increment.< / span > < / span > < / td > < td class = "benchmarkresult" > 10.5< / td > < td class = "benchmarkresult" > 10.3< / td > < td class = "benchmarkresult" > 11.0< / td > < td class = "benchmarkresult" > 14.7< / td > < td class = "benchmarkresult" > 28.3< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > lstringa< 512> copy{str_with_len_N};/1024< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > А у
2026-02-14 10:09:54 +00:00
And then it's like everyone else.< / span > < / span > < / td > < td class = "benchmarkresult" > 52.1< / td > < td class = "benchmarkresult" > 54.2< / td > < td class = "benchmarkresult" > 94.5< / td > < td class = "benchmarkresult" > 93.5< / td > < td class = "benchmarkresult" > 121< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > lstringa< 512> copy{str_with_len_N};/2048< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 64.9< / td > < td class = "benchmarkresult" > 66.7< / td > < td class = "benchmarkresult" > 134< / td > < td class = "benchmarkresult" > 127< / td > < td class = "benchmarkresult" > 167< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L786" > lstringa< 512> copy{str_with_len_N};/4096< / a > < span class = "tooltiptext code" > template< typename T>
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void CopyDynString(benchmark::State& state) {
T x(state.range(0), ' a' );
for (auto _: state) {
T copy{x};
benchmark::DoNotOptimize(copy);
benchmark::DoNotOptimize(x);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 87.6< / td > < td class = "benchmarkresult" > 85.2< / td > < td class = "benchmarkresult" > 193< / td > < td class = "benchmarkresult" > 192< / td > < td class = "benchmarkresult" > 237< / td > < / tr >
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' C o p y n o t l i t e r a l S t r w i t h N s y m b o l s ' ] = { i d : ' b s 1 5 ' , t e s t s : [
{name:'std::string copy{str_with_len_N};/15',data:[4.87,7.91,1.83,4.42,125]},
{name:'std::string copy{str_with_len_N};/16',data:[23.2,26.5,80.8,81.3,123]},
{name:'std::string copy{str_with_len_N};/23',data:[23.5,27.3,78.3,78.6,128]},
{name:'std::string copy{str_with_len_N};/24',data:[22.6,27.7,78.5,79.8,120]},
{name:'std::string copy{str_with_len_N};/32',data:[22.6,26.5,81.8,83.8,128]},
{name:'std::string copy{str_with_len_N};/64',data:[22.3,26.9,82.8,81.7,131]},
{name:'std::string copy{str_with_len_N};/128',data:[23.7,28.9,82.6,87.7,132]},
{name:'std::string copy{str_with_len_N};/256',data:[24.9,28.8,85.0,88.5,161]},
{name:'std::string copy{str_with_len_N};/512',data:[28.5,33.6,86.5,92.7,149]},
{name:'std::string copy{str_with_len_N};/1024',data:[34.8,44.2,95.3,97.1,156]},
{name:'std::string copy{str_with_len_N};/2048',data:[79.1,80.3,133,129,206]},
{name:'std::string copy{str_with_len_N};/4096',data:[111,115,179,180,271]},
{name:'stringa copy{str_with_len_N};/15',data:[1.09,1.09,1.29,4.00,4.60]},
{name:'stringa copy{str_with_len_N};/16',data:[1.13,1.10,1.32,4.02,7.36]},
{name:'stringa copy{str_with_len_N};/23',data:[1.11,1.10,1.29,4.10,7.39]},
{name:'stringa copy{str_with_len_N};/24',data:[15.9,16.1,15.8,18.4,7.35]},
{name:'stringa copy{str_with_len_N};/32',data:[16.0,16.0,15.8,18.4,7.33]},
{name:'stringa copy{str_with_len_N};/64',data:[16.0,16.1,15.8,18.3,7.37]},
{name:'stringa copy{str_with_len_N};/128',data:[16.0,16.0,15.7,18.4,7.30]},
{name:'stringa copy{str_with_len_N};/256',data:[16.0,15.9,15.8,18.3,7.33]},
{name:'stringa copy{str_with_len_N};/512',data:[16.0,16.0,15.7,18.2,7.44]},
{name:'stringa copy{str_with_len_N};/1024',data:[16.0,16.1,15.8,18.2,7.35]},
{name:'stringa copy{str_with_len_N};/2048',data:[15.9,16.2,16.8,18.3,7.33]},
{name:'stringa copy{str_with_len_N};/4096',data:[15.9,16.0,15.7,18.3,7.36]},
{name:'lstringa< 16 > copy{str_with_len_N};/15',data:[1.47,1.10,1.50,4.84,7.29]},
{name:'lstringa< 16 > copy{str_with_len_N};/16',data:[5.22,5.38,5.09,8.98,19.3]},
{name:'lstringa< 16 > copy{str_with_len_N};/23',data:[5.16,5.43,5.36,9.08,85.0]},
{name:'lstringa< 16 > copy{str_with_len_N};/24',data:[22.6,23.6,76.8,81.2,85.7]},
{name:'lstringa< 16 > copy{str_with_len_N};/32',data:[23.0,23.5,81.4,85.0,93.3]},
{name:'lstringa< 16 > copy{str_with_len_N};/64',data:[25.5,25.7,80.8,83.7,92.8]},
{name:'lstringa< 16 > copy{str_with_len_N};/128',data:[25.7,25.6,82.8,90.0,95.0]},
{name:'lstringa< 16 > copy{str_with_len_N};/256',data:[27.1,28.0,87.4,93.2,126]},
{name:'lstringa< 16 > copy{str_with_len_N};/512',data:[29.8,29.6,86.9,91.0,119]},
{name:'lstringa< 16 > copy{str_with_len_N};/1024',data:[51.8,56.5,93.4,98.2,120]},
{name:'lstringa< 16 > copy{str_with_len_N};/2048',data:[65.7,66.4,133,130,169]},
{name:'lstringa< 16 > copy{str_with_len_N};/4096',data:[86.4,87.0,189,183,236]},
{name:'lstringa< 512 > copy{str_with_len_N};/15',data:[1.49,1.14,1.49,4.03,7.25]},
{name:'lstringa< 512 > copy{str_with_len_N};/16',data:[5.15,4.46,5.15,8.78,19.5]},
{name:'lstringa< 512 > copy{str_with_len_N};/23',data:[5.25,4.67,5.14,8.82,19.9]},
{name:'lstringa< 512 > copy{str_with_len_N};/24',data:[5.09,4.10,5.12,8.74,19.4]},
{name:'lstringa< 512 > copy{str_with_len_N};/32',data:[5.26,4.20,8.25,11.9,22.7]},
{name:'lstringa< 512 > copy{str_with_len_N};/64',data:[6.39,5.66,8.00,12.3,22.4]},
{name:'lstringa< 512 > copy{str_with_len_N};/128',data:[6.59,6.97,8.46,12.4,23.6]},
{name:'lstringa< 512 > copy{str_with_len_N};/256',data:[7.99,7.99,9.58,13.4,24.8]},
{name:'lstringa< 512 > copy{str_with_len_N};/512',data:[10.5,10.3,11.0,14.7,28.3]},
{name:'lstringa< 512 > copy{str_with_len_N};/1024',data:[52.1,54.2,94.5,93.5,121]},
{name:'lstringa< 512 > copy{str_with_len_N};/2048',data:[64.9,66.7,134,127,167]},
{name:'lstringa< 512 > copy{str_with_len_N};/4096',data:[87.6,85.2,193,192,237]}
2025-04-05 14:21:11 +00:00
]}< / script >
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< div class = "benchset" id = "bs16" > < h4 > < a id = "bs94756718925776995960" href = "#bs94756718925776995960" > #< / a > Convert to int ' 1234567' < / h4 >
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< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-14 10:09:54 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L801" > std::string s = " 123456789" ; int res = std::strtol(s.c_str(), 0, 10);< / a > < span class = "tooltiptext code" > void ToIntStr10(benchmark::State& state, const std::string& s, int c) {
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for (auto _: state) {
int res = std::strtol(s.c_str(), nullptr, 10);
#ifdef CHECK_RESULT
if (res != c) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(res);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > В
нет нужды в null терминированности. Ближайший аналог такого
поведения "std::from_chars", но он к сожалению очень ограничен
по возможностям. Здесь я попытался произвести тесты, близкие по
2026-01-21 11:59:17 +00:00
логике к работе std::from_chars
In simstr, a string fragment is sufficient for conversion to a number;
there's no need for null termination. The closest analog to this behavior
is "std::from_chars," but unfortunately, it is very limited in its capabilities.
2026-02-14 10:09:54 +00:00
Here, I attempted to run tests that are similar in logic to std::from_chars.< / span > < / span > < / td > < td class = "benchmarkresult" > 26.9< / td > < td class = "benchmarkresult" > 27.2< / td > < td class = "benchmarkresult" > 30.6< / td > < td class = "benchmarkresult" > 31.5< / td > < td class = "benchmarkresult" > 203< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L840" > std::string_view s = " 123456789" ; std::from_chars(s.data(), s.data() + s.size(), res, 10);< / a > < span class = "tooltiptext code" > void ToIntFromChars10(benchmark::State& state, const std::string_view& s, int c) {
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for (auto _: state) {
int res = 0;
std::from_chars(s.data(), s.data() + s.size(), res, 10);
#ifdef CHECK_RESULT
if (res != c) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(res);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > from_chars требует точного указания основания счисления,
2026-01-21 11:59:17 +00:00
не допускает знаков плюс, пробелов, префиксов 0x и т.п.
from_chars requires an exact radix specification and does not allow plus
2026-02-14 10:09:54 +00:00
signs, spaces, 0x prefixes, etc.< / span > < / span > < / td > < td class = "benchmarkresult" > 14.5< / td > < td class = "benchmarkresult" > 12.0< / td > < td class = "benchmarkresult" > 13.5< / td > < td class = "benchmarkresult" > 14.8< / td > < td class = "benchmarkresult" > 2.18< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L868" > stringa s = " 123456789" ; int res = s.to_int< int, true, 10, false>< / a > < span class = "tooltiptext code" > template< typename T>
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void ToIntSimStr10(benchmark::State& state, T t, int c) {
for (auto _: state) {
2025-11-26 19:15:50 +00:00
int res = t. template to_int< int, true, 10, false, false>().value;
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#ifdef CHECK_RESULT
if (res != c) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(res);
benchmark::DoNotOptimize(t);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Здесь для to_int заданы такие же ограничения - проверять переполнение,
2026-01-21 11:59:17 +00:00
десятичная система, без лидирующих пробелов и знака плюс
Here, to_int has the same restrictions: check for overflow,
2026-02-14 10:09:54 +00:00
decimal system, no leading spaces, and no plus sign.< / span > < / span > < / td > < td class = "benchmarkresult" > 9.62< / td > < td class = "benchmarkresult" > 8.54< / td > < td class = "benchmarkresult" > 13.8< / td > < td class = "benchmarkresult" > 15.9< / td > < td class = "benchmarkresult" > 50.4< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L868" > ssa s = " 123456789" ; int res = s.to_int< int, true, 10, false>< / a > < span class = "tooltiptext code" > template< typename T>
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void ToIntSimStr10(benchmark::State& state, T t, int c) {
for (auto _: state) {
2025-11-26 19:15:50 +00:00
int res = t. template to_int< int, true, 10, false, false>().value;
2025-04-05 14:21:11 +00:00
#ifdef CHECK_RESULT
if (res != c) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(res);
benchmark::DoNotOptimize(t);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 9.84< / td > < td class = "benchmarkresult" > 7.79< / td > < td class = "benchmarkresult" > 9.17< / td > < td class = "benchmarkresult" > 15.2< / td > < td class = "benchmarkresult" > 47.5< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L868" > lstringa< 20> s = " 123456789" ; int res = s.to_int< int, true, 10, false>< / a > < span class = "tooltiptext code" > template< typename T>
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void ToIntSimStr10(benchmark::State& state, T t, int c) {
for (auto _: state) {
2025-11-26 19:15:50 +00:00
int res = t. template to_int< int, true, 10, false, false>().value;
2025-04-05 14:21:11 +00:00
#ifdef CHECK_RESULT
if (res != c) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(res);
benchmark::DoNotOptimize(t);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 9.22< / td > < td class = "benchmarkresult" > 8.67< / td > < td class = "benchmarkresult" > 13.9< / td > < td class = "benchmarkresult" > 15.3< / td > < td class = "benchmarkresult" > 46.7< / td > < / tr >
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' C o n v e r t t o i n t \ ' 1 2 3 4 5 6 7 \ ' ' ] = { i d : ' b s 1 6 ' , t e s t s : [
{name:'std::string s = "123456789"; int res = std::strtol(s.c_str(), 0, 10);',data:[26.9,27.2,30.6,31.5,203]},
{name:'std::string_view s = "123456789"; std::from_chars(s.data(), s.data() + s.size(), res, 10);',data:[14.5,12.0,13.5,14.8,2.18]},
{name:'stringa s = "123456789"; int res = s.to_int< int , true , 10 , false > ',data:[9.62,8.54,13.8,15.9,50.4]},
{name:'ssa s = "123456789"; int res = s.to_int< int , true , 10 , false > ',data:[9.84,7.79,9.17,15.2,47.5]},
{name:'lstringa< 20 > s = "123456789"; int res = s.to_int< int , true , 10 , false > ',data:[9.22,8.67,13.9,15.3,46.7]}
2025-04-05 14:21:11 +00:00
]}< / script >
2026-02-14 10:09:54 +00:00
< div class = "benchset" id = "bs17" > < h4 > < a id = "bs182426078870126042750" href = "#bs182426078870126042750" > #< / a > Convert to unsigned ' abcDef' < / h4 >
2026-02-08 11:17:03 +00:00
< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-14 10:09:54 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L814" > std::string s = " abcDef" ; int res = std::strtol(s.c_str(), 0, 16);< / a > < span class = "tooltiptext code" > void ToIntStr16(benchmark::State& state, const std::string& s, int c) {
2025-04-05 14:21:11 +00:00
for (auto _: state) {
int res = std::strtol(s.c_str(), nullptr, 16);
#ifdef CHECK_RESULT
if (res != c) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(res);
}
2026-01-21 11:59:17 +00:00
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Всё то же, только для 16р о
2026-02-14 10:09:54 +00:00
Everything is the same, only for the hexadecimal system< / span > < / span > < / td > < td class = "benchmarkresult" > 22.8< / td > < td class = "benchmarkresult" > 23.8< / td > < td class = "benchmarkresult" > 34.2< / td > < td class = "benchmarkresult" > 34.5< / td > < td class = "benchmarkresult" > 151< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L854" > std::string_view s = " abcDef" ; std::from_chars(s.data(), s.data() + s.size(), res, 16);< / a > < span class = "tooltiptext code" > void ToIntFromChars16(benchmark::State& state, const std::string_view& s, int c) {
2025-04-05 14:21:11 +00:00
for (auto _: state) {
int res = 0;
std::from_chars(s.data(), s.data() + s.size(), res, 16);
#ifdef CHECK_RESULT
if (res != c) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(res);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 9.22< / td > < td class = "benchmarkresult" > 8.07< / td > < td class = "benchmarkresult" > 8.11< / td > < td class = "benchmarkresult" > 9.16< / td > < td class = "benchmarkresult" > 53.9< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L883" > stringa s = " abcDef" ; int res = s.to_int< int, true, 16, false>< / a > < span class = "tooltiptext code" > template< typename T>
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void ToIntSimStr16(benchmark::State& state, T t, int c) {
for (auto _: state) {
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int res = t. template to_int< int, true, 16, false, false>().value;
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#ifdef CHECK_RESULT
if (res != c) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(res);
benchmark::DoNotOptimize(t);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 7.55< / td > < td class = "benchmarkresult" > 8.44< / td > < td class = "benchmarkresult" > 12.7< / td > < td class = "benchmarkresult" > 13.8< / td > < td class = "benchmarkresult" > 46.1< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L883" > ssa s = " abcDef" ; int res = s.to_int< int, true, 16, false>< / a > < span class = "tooltiptext code" > template< typename T>
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void ToIntSimStr16(benchmark::State& state, T t, int c) {
for (auto _: state) {
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int res = t. template to_int< int, true, 16, false, false>().value;
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#ifdef CHECK_RESULT
if (res != c) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(res);
benchmark::DoNotOptimize(t);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 7.55< / td > < td class = "benchmarkresult" > 6.72< / td > < td class = "benchmarkresult" > 7.39< / td > < td class = "benchmarkresult" > 13.4< / td > < td class = "benchmarkresult" > 44.8< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L883" > lstringa< 20> s = " abcDef" ; int res = s.to_int< int, true, 16, false>< / a > < span class = "tooltiptext code" > template< typename T>
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void ToIntSimStr16(benchmark::State& state, T t, int c) {
for (auto _: state) {
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int res = t. template to_int< int, true, 16, false, false>().value;
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#ifdef CHECK_RESULT
if (res != c) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(res);
benchmark::DoNotOptimize(t);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 7.45< / td > < td class = "benchmarkresult" > 8.42< / td > < td class = "benchmarkresult" > 12.7< / td > < td class = "benchmarkresult" > 13.6< / td > < td class = "benchmarkresult" > 44.0< / td > < / tr >
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' C o n v e r t t o u n s i g n e d \ ' a b c D e f \ ' ' ] = { i d : ' b s 1 7 ' , t e s t s : [
{name:'std::string s = "abcDef"; int res = std::strtol(s.c_str(), 0, 16);',data:[22.8,23.8,34.2,34.5,151]},
{name:'std::string_view s = "abcDef"; std::from_chars(s.data(), s.data() + s.size(), res, 16);',data:[9.22,8.07,8.11,9.16,53.9]},
{name:'stringa s = "abcDef"; int res = s.to_int< int , true , 16 , false > ',data:[7.55,8.44,12.7,13.8,46.1]},
{name:'ssa s = "abcDef"; int res = s.to_int< int , true , 16 , false > ',data:[7.55,6.72,7.39,13.4,44.8]},
{name:'lstringa< 20 > s = "abcDef"; int res = s.to_int< int , true , 16 , false > ',data:[7.45,8.42,12.7,13.6,44.0]}
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]}< / script >
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< div class = "benchset" id = "bs18" > < h4 > < a id = "bs52606100125109966680" href = "#bs52606100125109966680" > #< / a > Convert to int ' 1234567' < / h4 >
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< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
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< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L827" > std::string s = " 123456789" ; int res = std::strtol(s.c_str(), 0, 0);< / a > < span class = "tooltiptext code" > void ToIntStr0(benchmark::State& state, const std::string& s, int c) {
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for (auto _: state) {
int res = std::strtol(s.c_str(), nullptr, 0);
#ifdef CHECK_RESULT
if (res != c) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(res);
}
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}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > А
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And here we have parsing of an arbitrary number.< / span > < / span > < / td > < td class = "benchmarkresult" > 28.8< / td > < td class = "benchmarkresult" > 27.8< / td > < td class = "benchmarkresult" > 42.8< / td > < td class = "benchmarkresult" > 44.1< / td > < td class = "benchmarkresult" > 219< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L898" > stringa s = " 123456789" ; int res = s.to_int< int>; // Check overflow< / a > < span class = "tooltiptext code" > template< typename T>
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void ToIntSimStr0(benchmark::State& state, T t, int c) {
for (auto _: state) {
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int res = t. template to_int< int>().value;
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#ifdef CHECK_RESULT
if (res != c) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(res);
benchmark::DoNotOptimize(t);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 11.4< / td > < td class = "benchmarkresult" > 15.3< / td > < td class = "benchmarkresult" > 18.5< / td > < td class = "benchmarkresult" > 22.3< / td > < td class = "benchmarkresult" > 35.2< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L913" > ssa s = " 123456789" ; int res = s.to_int< int, false>; // No check overflow< / a > < span class = "tooltiptext code" > void ToIntNoOverflow(benchmark::State& state, ssa t, int c) {
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for (auto _: state) {
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int res = t.to_int< int, false>().value;
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#ifdef CHECK_RESULT
if (res != c) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(res);
benchmark::DoNotOptimize(t);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 12.9< / td > < td class = "benchmarkresult" > 10.8< / td > < td class = "benchmarkresult" > 13.6< / td > < td class = "benchmarkresult" > 18.8< / td > < td class = "benchmarkresult" > 44.3< / td > < / tr >
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' C o n v e r t t o i n t \ ' 1 2 3 4 5 6 7 \ ' ' ] = { i d : ' b s 1 8 ' , t e s t s : [
{name:'std::string s = " 123456789"; int res = std::strtol(s.c_str(), 0, 0);',data:[28.8,27.8,42.8,44.1,219]},
{name:'stringa s = " 123456789"; int res = s.to_int< int > ; // Check overflow',data:[11.4,15.3,18.5,22.3,35.2]},
{name:'ssa s = " 123456789"; int res = s.to_int< int , false > ; // No check overflow',data:[12.9,10.8,13.6,18.8,44.3]}
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]}< / script >
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< div class = "benchset" id = "bs19" > < h4 > < a id = "bs182348477702821075660" href = "#bs182348477702821075660" > #< / a > Convert to double ' 1234.567e10' < / h4 >
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< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
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< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L943" > std::string s = " 1234.567e10" ; double res = std::strtod(s.c_str(), nullptr);< / a > < span class = "tooltiptext code" > void ToDoubleStr(benchmark::State& state, const std::string& s, double c) {
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for (auto _: state) {
char* ptr = nullptr;
double res = std::strtod(s.c_str(), & ptr);
if (ptr == s.c_str()) {
state.SkipWithError(" not equal" );
}
#ifdef CHECK_RESULT
if (res != c) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(res);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 66.2< / td > < td class = "benchmarkresult" > 62.8< / td > < td class = "benchmarkresult" > 97.9< / td > < td class = "benchmarkresult" > 103< / td > < td class = "benchmarkresult" > 633< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L960" > std::string_view s = " 1234.567e10" ; std::from_chars(s.data(), s.data() + s.size(), res);< / a > < span class = "tooltiptext code" > void ToDoubleFromChars(benchmark::State& state, const std::string_view& s, double c) {
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for (auto _: state) {
double res = 0;
if (std::from_chars(s.data(), s.data() + s.size(), res).ec != std::errc{}) {
state.SkipWithError(" not equal" );
}
#ifdef CHECK_RESULT
if (res != c) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(res);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 23.6< / td > < td class = "benchmarkresult" > 24.2< / td > < td class = "benchmarkresult" > 58.4< / td > < td class = "benchmarkresult" > 77.6< / td > < td class = "benchmarkresult" > 279< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L976" > ssa s = " 1234.567e10" ; double res = *s.to_double()< / a > < span class = "tooltiptext code" > template< typename T>
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void ToDoubleSimStr(benchmark::State& state, T t, double c) {
for (auto _: state) {
auto r = t.template to_double< false>();
if (!r) {
state.SkipWithError(" not equal" );
}
double res = *r;
#ifdef CHECK_RESULT
if (res != c) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(res);
benchmark::DoNotOptimize(t);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 24.8< / td > < td class = "benchmarkresult" > 24.5< / td > < td class = "benchmarkresult" > 35.1< / td > < td class = "benchmarkresult" > 36.4< / td > < td class = "benchmarkresult" > 91.4< / td > < / tr >
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' C o n v e r t t o d o u b l e \ ' 1 2 3 4 . 5 6 7 e 1 0 \ ' ' ] = { i d : ' b s 1 9 ' , t e s t s : [
{name:'std::string s = "1234.567e10"; double res = std::strtod(s.c_str(), nullptr);',data:[66.2,62.8,97.9,103,633]},
{name:'std::string_view s = "1234.567e10"; std::from_chars(s.data(), s.data() + s.size(), res);',data:[23.6,24.2,58.4,77.6,279]},
{name:'ssa s = "1234.567e10"; double res = *s.to_double()',data:[24.8,24.5,35.1,36.4,91.4]}
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]}< / script >
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< div class = "benchset" id = "bs20" > < h4 > < a id = "bs96505608161678391610" href = "#bs96505608161678391610" > #< / a > Append const literal of 16 bytes 64 times, 1024 total length< / h4 >
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< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
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< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1000" > std::stringstream str; ... str < < " abbaabbaabbaabba" ;< / a > < span class = "tooltiptext code" > void AppendStreamConstLiteral(benchmark::State& state) {
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for (auto _: state) {
std::string result;
std::stringstream str;
for (size_t c = 0; c < 64; c++) {
str < < TEXT_16;
}
result = str.str();
#ifdef CHECK_RESULT
if (result.size() != 1024) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(str);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1336< / td > < td class = "benchmarkresult" > 1345< / td > < td class = "benchmarkresult" > 4844< / td > < td class = "benchmarkresult" > 5669< / td > < td class = "benchmarkresult" > 15882< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1019" > std::string str; ... str += " abbaabbaabbaabba" ;< / a > < span class = "tooltiptext code" > void AppendStdStringConstLiteral(benchmark::State& state) {
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for (auto _: state) {
std::string result;
for (size_t c = 0; c < 64; c++) {
result += TEXT_16;
}
#ifdef CHECK_RESULT
if (result.size() != 1024) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 407< / td > < td class = "benchmarkresult" > 346< / td > < td class = "benchmarkresult" > 1045< / td > < td class = "benchmarkresult" > 1305< / td > < td class = "benchmarkresult" > 1402< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1035" > lstringa< 8> str; ... str += " abbaabbaabbaabba" ;< / a > < span class = "tooltiptext code" > template< unsigned N>
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void AppendLstringConstLiteral(benchmark::State& state) {
for (auto _: state) {
lstringa< N> result;
for (size_t c = 0; c < 64; c++) {
result += TEXT_16;
}
#ifdef CHECK_RESULT
if (result.length() != 1024) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 376< / td > < td class = "benchmarkresult" > 345< / td > < td class = "benchmarkresult" > 782< / td > < td class = "benchmarkresult" > 986< / td > < td class = "benchmarkresult" > 1320< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1035" > lstringa< 128> str; ... str += " abbaabbaabbaabba" ;< / a > < span class = "tooltiptext code" > template< unsigned N>
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void AppendLstringConstLiteral(benchmark::State& state) {
for (auto _: state) {
lstringa< N> result;
for (size_t c = 0; c < 64; c++) {
result += TEXT_16;
}
#ifdef CHECK_RESULT
if (result.length() != 1024) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Чем больше внутренний буфер, тем меньше раз требуется
2026-01-21 11:59:17 +00:00
аллокация, тем быстрее результат.
The larger the internal buffer, the fewer allocations are
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required, and the faster the result.< / span > < / span > < / td > < td class = "benchmarkresult" > 236< / td > < td class = "benchmarkresult" > 239< / td > < td class = "benchmarkresult" > 406< / td > < td class = "benchmarkresult" > 582< / td > < td class = "benchmarkresult" > 889< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1035" > lstringa< 512> str; ... str += " abbaabbaabbaabba" ;< / a > < span class = "tooltiptext code" > template< unsigned N>
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void AppendLstringConstLiteral(benchmark::State& state) {
for (auto _: state) {
lstringa< N> result;
for (size_t c = 0; c < 64; c++) {
result += TEXT_16;
}
#ifdef CHECK_RESULT
if (result.length() != 1024) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 206< / td > < td class = "benchmarkresult" > 209< / td > < td class = "benchmarkresult" > 268< / td > < td class = "benchmarkresult" > 400< / td > < td class = "benchmarkresult" > 624< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1035" > lstringa< 1024> str; ... str += " abbaabbaabbaabba" ;< / a > < span class = "tooltiptext code" > template< unsigned N>
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void AppendLstringConstLiteral(benchmark::State& state) {
for (auto _: state) {
lstringa< N> result;
for (size_t c = 0; c < 64; c++) {
result += TEXT_16;
}
#ifdef CHECK_RESULT
if (result.length() != 1024) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 136< / td > < td class = "benchmarkresult" > 139< / td > < td class = "benchmarkresult" > 156< / td > < td class = "benchmarkresult" > 244< / td > < td class = "benchmarkresult" > 497< / td > < / tr >
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' A p p e n d c o n s t l i t e r a l o f 1 6 b y t e s 6 4 t i m e s , 1 0 2 4 t o t a l l e n g t h ' ] = { i d : ' b s 2 0 ' , t e s t s : [
{name:'std::stringstream str; ... str < < "abbaabbaabbaabba";',data:[1336,1345,4844,5669,15882]},
{name:'std::string str; ... str += "abbaabbaabbaabba";',data:[407,346,1045,1305,1402]},
{name:'lstringa< 8 > str; ... str += "abbaabbaabbaabba";',data:[376,345,782,986,1320]},
{name:'lstringa< 128 > str; ... str += "abbaabbaabbaabba";',data:[236,239,406,582,889]},
{name:'lstringa< 512 > str; ... str += "abbaabbaabbaabba";',data:[206,209,268,400,624]},
{name:'lstringa< 1024 > str; ... str += "abbaabbaabbaabba";',data:[136,139,156,244,497]}
2025-04-05 14:21:11 +00:00
]}< / script >
2026-02-14 10:09:54 +00:00
< div class = "benchset" id = "bs21" > < h4 > < a id = "bs36931044816721597850" href = "#bs36931044816721597850" > #< / a > Append string of 16 bytes and const literal of 16 bytes 32 times, 1024 total length< / h4 >
2026-02-08 11:17:03 +00:00
< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-14 10:09:54 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1060" > std::stringstream str; ... str < < str_var < < " abbaabbaabbaabba" ;< / a > < span class = "tooltiptext code" > void AppendStreamStrConstLiteral(benchmark::State& state) {
2025-04-05 14:21:11 +00:00
std::string s1 = TEXT_16;
for (auto _: state) {
std::string result;
std::stringstream s;
for (size_t c = 0; c < 32; c++) {
s < < s1 < < TEXT_16;
}
result = s.str();
#ifdef CHECK_RESULT
if (result.size() != 1024) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(s1);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1362< / td > < td class = "benchmarkresult" > 1345< / td > < td class = "benchmarkresult" > 4654< / td > < td class = "benchmarkresult" > 5946< / td > < td class = "benchmarkresult" > 16035< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1080" > std::string str; ... str += str_var + " abbaabbaabbaabba" ;< / a > < span class = "tooltiptext code" > void AppendStdStrStrConstLiteral(benchmark::State& state) {
2025-04-05 14:21:11 +00:00
std::string p1 = TEXT_16;
for (auto _: state) {
std::string result;
for (size_t c = 0; c < 32; c++) {
result += p1 + TEXT_16;
}
#ifdef CHECK_RESULT
if (result.size() != 1024) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(p1);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1221< / td > < td class = "benchmarkresult" > 1298< / td > < td class = "benchmarkresult" > 3736< / td > < td class = "benchmarkresult" > 4420< / td > < td class = "benchmarkresult" > 4646< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1098" > lstringa< 8> str; ... str += str_var + " abbaabbaabbaabba" ;< / a > < span class = "tooltiptext code" > template< unsigned N>
2025-04-05 14:21:11 +00:00
void AppendLstringStrConstLiteral(benchmark::State& state) {
stringa p1 = TEXT_16;
for (auto _: state) {
lstringa< N> result;
for (size_t c = 0; c < 32; c++) {
result += p1 + TEXT_16;
}
#ifdef CHECK_RESULT
if (result.length() != 1024) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(p1);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 385< / td > < td class = "benchmarkresult" > 403< / td > < td class = "benchmarkresult" > 713< / td > < td class = "benchmarkresult" > 920< / td > < td class = "benchmarkresult" > 1514< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1098" > lstringa< 128> str; ... str += str_var + " abbaabbaabbaabba" ;< / a > < span class = "tooltiptext code" > template< unsigned N>
2025-04-05 14:21:11 +00:00
void AppendLstringStrConstLiteral(benchmark::State& state) {
stringa p1 = TEXT_16;
for (auto _: state) {
lstringa< N> result;
for (size_t c = 0; c < 32; c++) {
result += p1 + TEXT_16;
}
#ifdef CHECK_RESULT
if (result.length() != 1024) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(p1);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 301< / td > < td class = "benchmarkresult" > 342< / td > < td class = "benchmarkresult" > 437< / td > < td class = "benchmarkresult" > 635< / td > < td class = "benchmarkresult" > 1209< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1098" > lstringa< 512> str; ... str += str_var + " abbaabbaabbaabba" ;< / a > < span class = "tooltiptext code" > template< unsigned N>
2025-04-05 14:21:11 +00:00
void AppendLstringStrConstLiteral(benchmark::State& state) {
stringa p1 = TEXT_16;
for (auto _: state) {
lstringa< N> result;
for (size_t c = 0; c < 32; c++) {
result += p1 + TEXT_16;
}
#ifdef CHECK_RESULT
if (result.length() != 1024) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(p1);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 293< / td > < td class = "benchmarkresult" > 299< / td > < td class = "benchmarkresult" > 281< / td > < td class = "benchmarkresult" > 384< / td > < td class = "benchmarkresult" > 986< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1098" > lstringa< 1024> str; ... str += str_var + " abbaabbaabbaabba" ;< / a > < span class = "tooltiptext code" > template< unsigned N>
2025-04-05 14:21:11 +00:00
void AppendLstringStrConstLiteral(benchmark::State& state) {
stringa p1 = TEXT_16;
for (auto _: state) {
lstringa< N> result;
for (size_t c = 0; c < 32; c++) {
result += p1 + TEXT_16;
}
#ifdef CHECK_RESULT
if (result.length() != 1024) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(p1);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 235< / td > < td class = "benchmarkresult" > 254< / td > < td class = "benchmarkresult" > 187< / td > < td class = "benchmarkresult" > 273< / td > < td class = "benchmarkresult" > 827< / td > < / tr >
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' A p p e n d s t r i n g o f 1 6 b y t e s a n d c o n s t l i t e r a l o f 1 6 b y t e s 3 2 t i m e s , 1 0 2 4 t o t a l l e n g t h ' ] = { i d : ' b s 2 1 ' , t e s t s : [
{name:'std::stringstream str; ... str < < str_var < < " abbaabbaabbaabba " ; ' , data: [ 1362 , 1345 , 4654 , 5946 , 16035 ] } ,
{name:'std::string str; ... str += str_var + "abbaabbaabbaabba";',data:[1221,1298,3736,4420,4646]},
{name:'lstringa< 8 > str; ... str += str_var + "abbaabbaabbaabba";',data:[385,403,713,920,1514]},
{name:'lstringa< 128 > str; ... str += str_var + "abbaabbaabbaabba";',data:[301,342,437,635,1209]},
{name:'lstringa< 512 > str; ... str += str_var + "abbaabbaabbaabba";',data:[293,299,281,384,986]},
{name:'lstringa< 1024 > str; ... str += str_var + "abbaabbaabbaabba";',data:[235,254,187,273,827]}
2025-04-05 14:21:11 +00:00
]}< / script >
2026-02-14 10:09:54 +00:00
< div class = "benchset" id = "bs22" > < h4 > < a id = "bs8293767858383349360" href = "#bs8293767858383349360" > #< / a > Append string of 16 bytes and const literal of 16 bytes 2048 times, 65536 total length< / h4 >
2026-02-08 11:17:03 +00:00
< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-14 10:09:54 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1126" > std::stringstream str; ... str < < str_var < < " abbaabbaabbaabba" ; 2048 times< / a > < span class = "tooltiptext code" > void AppendStreamStrConstLiteralBig(benchmark::State& state) {
2025-04-05 14:21:11 +00:00
std::string s1 = TEXT_16;
for (auto _: state) {
std::string result;
std::stringstream s;
for (size_t c = 0; c < 2048; c++) {
s < < s1 < < TEXT_16;
}
result = s.str();
#ifdef CHECK_RESULT
if (result.size() != 1024 * 64) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(s1);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 111021< / td > < td class = "benchmarkresult" > 113874< / td > < td class = "benchmarkresult" > 234977< / td > < td class = "benchmarkresult" > 272220< / td > < td class = "benchmarkresult" > 821457< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1146" > std::string str; ... str += str_var + " abbaabbaabbaabba" ; 2048 times< / a > < span class = "tooltiptext code" > void AppendStdStrStrConstLiteralBig(benchmark::State& state) {
2025-04-05 14:21:11 +00:00
std::string p1 = TEXT_16;
for (auto _: state) {
std::string result;
for (size_t c = 0; c < 2048; c++) {
result += p1 + TEXT_16;
}
#ifdef CHECK_RESULT
if (result.size() != 1024 * 64) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(p1);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 69967< / td > < td class = "benchmarkresult" > 73347< / td > < td class = "benchmarkresult" > 192544< / td > < td class = "benchmarkresult" > 203527< / td > < td class = "benchmarkresult" > 238655< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1164" > lstringa< 8> str; ... str += str_var + " abbaabbaabbaabba" ; 2048 times< / a > < span class = "tooltiptext code" > template< unsigned N>
2025-04-05 14:21:11 +00:00
void AppendLstringStrConstLiteralBig(benchmark::State& state) {
stringa p1 = TEXT_16;
for (auto _: state) {
lstringa< N> result;
for (size_t c = 0; c < 2048; c++) {
result += p1 + TEXT_16;
}
#ifdef CHECK_RESULT
if (result.length() != 1024 * 64) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(p1);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 45414< / td > < td class = "benchmarkresult" > 44770< / td > < td class = "benchmarkresult" > 20077< / td > < td class = "benchmarkresult" > 24303< / td > < td class = "benchmarkresult" > 58092< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1164" > lstringa< 128> str; ... str += str_var + " abbaabbaabbaabba" ; 2048 times< / a > < span class = "tooltiptext code" > template< unsigned N>
2025-04-05 14:21:11 +00:00
void AppendLstringStrConstLiteralBig(benchmark::State& state) {
stringa p1 = TEXT_16;
for (auto _: state) {
lstringa< N> result;
for (size_t c = 0; c < 2048; c++) {
result += p1 + TEXT_16;
}
#ifdef CHECK_RESULT
if (result.length() != 1024 * 64) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(p1);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 23033< / td > < td class = "benchmarkresult" > 25460< / td > < td class = "benchmarkresult" > 16403< / td > < td class = "benchmarkresult" > 22770< / td > < td class = "benchmarkresult" > 56704< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1164" > lstringa< 512> str; ... str += str_var + " abbaabbaabbaabba" ; 2048 times< / a > < span class = "tooltiptext code" > template< unsigned N>
2025-04-05 14:21:11 +00:00
void AppendLstringStrConstLiteralBig(benchmark::State& state) {
stringa p1 = TEXT_16;
for (auto _: state) {
lstringa< N> result;
for (size_t c = 0; c < 2048; c++) {
result += p1 + TEXT_16;
}
#ifdef CHECK_RESULT
if (result.length() != 1024 * 64) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(p1);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 19267< / td > < td class = "benchmarkresult" > 18428< / td > < td class = "benchmarkresult" > 16237< / td > < td class = "benchmarkresult" > 22095< / td > < td class = "benchmarkresult" > 55779< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1164" > lstringa< 1024> str; ... str += str_var + " abbaabbaabbaabba" ; 2048 times< / a > < span class = "tooltiptext code" > template< unsigned N>
2025-04-05 14:21:11 +00:00
void AppendLstringStrConstLiteralBig(benchmark::State& state) {
stringa p1 = TEXT_16;
for (auto _: state) {
lstringa< N> result;
for (size_t c = 0; c < 2048; c++) {
result += p1 + TEXT_16;
}
#ifdef CHECK_RESULT
if (result.length() != 1024 * 64) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(p1);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 17475< / td > < td class = "benchmarkresult" > 17351< / td > < td class = "benchmarkresult" > 15954< / td > < td class = "benchmarkresult" > 21427< / td > < td class = "benchmarkresult" > 56710< / td > < / tr >
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' A p p e n d s t r i n g o f 1 6 b y t e s a n d c o n s t l i t e r a l o f 1 6 b y t e s 2 0 4 8 t i m e s , 6 5 5 3 6 t o t a l l e n g t h ' ] = { i d : ' b s 2 2 ' , t e s t s : [
{name:'std::stringstream str; ... str < < str_var < < " abbaabbaabbaabba " ; 2048 times ' , data: [ 111021 , 113874 , 234977 , 272220 , 821457 ] } ,
{name:'std::string str; ... str += str_var + "abbaabbaabbaabba"; 2048 times',data:[69967,73347,192544,203527,238655]},
{name:'lstringa< 8 > str; ... str += str_var + "abbaabbaabbaabba"; 2048 times',data:[45414,44770,20077,24303,58092]},
{name:'lstringa< 128 > str; ... str += str_var + "abbaabbaabbaabba"; 2048 times',data:[23033,25460,16403,22770,56704]},
{name:'lstringa< 512 > str; ... str += str_var + "abbaabbaabbaabba"; 2048 times',data:[19267,18428,16237,22095,55779]},
{name:'lstringa< 1024 > str; ... str += str_var + "abbaabbaabbaabba"; 2048 times',data:[17475,17351,15954,21427,56710]}
2025-04-05 14:21:11 +00:00
]}< / script >
2026-02-14 10:09:54 +00:00
< div class = "benchset" id = "bs23" > < h4 > < a id = "bs66949588770596833730" href = "#bs66949588770596833730" > #< / a > Append 2 string of 16 bytes 32 times, 1024 total length< / h4 >
2026-02-08 11:17:03 +00:00
< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-14 10:09:54 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1191" > std::stringstream str; ... str < < str_var1 < < str_var2;< / a > < span class = "tooltiptext code" > void AppendStream2String(benchmark::State& state) {
2025-04-05 14:21:11 +00:00
std::string s1 = TEXT_16;
std::string s2 = TEXT_16;
for (auto _: state) {
std::string result;
std::stringstream s;
for (size_t c = 0; c < 32; c++) {
s < < s1 < < s2;
}
result = s.str();
#ifdef CHECK_RESULT
if (result.size() != 1024) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(s1);
benchmark::DoNotOptimize(s2);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1361< / td > < td class = "benchmarkresult" > 1352< / td > < td class = "benchmarkresult" > 4325< / td > < td class = "benchmarkresult" > 5265< / td > < td class = "benchmarkresult" > 16125< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1213" > std::string str; ... str += str_var1 + str_var2;< / a > < span class = "tooltiptext code" > void AppendStdStr2String(benchmark::State& state) {
2025-04-05 14:21:11 +00:00
std::string s1 = TEXT_16;
std::string s2 = TEXT_16;
2025-11-26 19:15:50 +00:00
2025-04-05 14:21:11 +00:00
for (auto _: state) {
std::string result;
for (size_t c = 0; c < 32; c++) {
result += s1 + s2;
}
#ifdef CHECK_RESULT
if (result.size() != 1024) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(s1);
benchmark::DoNotOptimize(s2);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1397< / td > < td class = "benchmarkresult" > 1422< / td > < td class = "benchmarkresult" > 4072< / td > < td class = "benchmarkresult" > 4034< / td > < td class = "benchmarkresult" > 5089< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1234" > lstringa< 16> str; ... str += str_var1 + str_var2;< / a > < span class = "tooltiptext code" > template< unsigned N>
2025-04-05 14:21:11 +00:00
void AppendLstring2String(benchmark::State& state) {
stra s1 = TEXT_16;
stra s2 = TEXT_16;
for (auto _: state) {
lstringa< N> result;
for (size_t c = 0; c < 32; c++) {
result += s1 + s2;
}
#ifdef CHECK_RESULT
if (result.length() != 1024) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(s1);
benchmark::DoNotOptimize(s2);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 452< / td > < td class = "benchmarkresult" > 465< / td > < td class = "benchmarkresult" > 794< / td > < td class = "benchmarkresult" > 911< / td > < td class = "benchmarkresult" > 1846< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1234" > lstringa< 128> str; ... str += str_var1 + str_var2;< / a > < span class = "tooltiptext code" > template< unsigned N>
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void AppendLstring2String(benchmark::State& state) {
stra s1 = TEXT_16;
stra s2 = TEXT_16;
for (auto _: state) {
lstringa< N> result;
for (size_t c = 0; c < 32; c++) {
result += s1 + s2;
}
#ifdef CHECK_RESULT
if (result.length() != 1024) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(s1);
benchmark::DoNotOptimize(s2);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 407< / td > < td class = "benchmarkresult" > 415< / td > < td class = "benchmarkresult" > 512< / td > < td class = "benchmarkresult" > 620< / td > < td class = "benchmarkresult" > 1663< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1234" > lstringa< 512> str; ... str += str_var1 + str_var2;< / a > < span class = "tooltiptext code" > template< unsigned N>
2025-04-05 14:21:11 +00:00
void AppendLstring2String(benchmark::State& state) {
stra s1 = TEXT_16;
stra s2 = TEXT_16;
for (auto _: state) {
lstringa< N> result;
for (size_t c = 0; c < 32; c++) {
result += s1 + s2;
}
#ifdef CHECK_RESULT
if (result.length() != 1024) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(s1);
benchmark::DoNotOptimize(s2);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 351< / td > < td class = "benchmarkresult" > 361< / td > < td class = "benchmarkresult" > 395< / td > < td class = "benchmarkresult" > 469< / td > < td class = "benchmarkresult" > 1291< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1234" > lstringa< 1024> str; ... str += str_var1 + str_var2;< / a > < span class = "tooltiptext code" > template< unsigned N>
2025-04-05 14:21:11 +00:00
void AppendLstring2String(benchmark::State& state) {
stra s1 = TEXT_16;
stra s2 = TEXT_16;
for (auto _: state) {
lstringa< N> result;
for (size_t c = 0; c < 32; c++) {
result += s1 + s2;
}
#ifdef CHECK_RESULT
if (result.length() != 1024) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(s1);
benchmark::DoNotOptimize(s2);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 300< / td > < td class = "benchmarkresult" > 322< / td > < td class = "benchmarkresult" > 287< / td > < td class = "benchmarkresult" > 362< / td > < td class = "benchmarkresult" > 1066< / td > < / tr >
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' A p p e n d 2 s t r i n g o f 1 6 b y t e s 3 2 t i m e s , 1 0 2 4 t o t a l l e n g t h ' ] = { i d : ' b s 2 3 ' , t e s t s : [
{name:'std::stringstream str; ... str < < str_var1 < < str_var2 ; ' , data: [ 1361 , 1352 , 4325 , 5265 , 16125 ] } ,
{name:'std::string str; ... str += str_var1 + str_var2;',data:[1397,1422,4072,4034,5089]},
{name:'lstringa< 16 > str; ... str += str_var1 + str_var2;',data:[452,465,794,911,1846]},
{name:'lstringa< 128 > str; ... str += str_var1 + str_var2;',data:[407,415,512,620,1663]},
{name:'lstringa< 512 > str; ... str += str_var1 + str_var2;',data:[351,361,395,469,1291]},
{name:'lstringa< 1024 > str; ... str += str_var1 + str_var2;',data:[300,322,287,362,1066]}
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]}< / script >
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< div class = "benchset" id = "bs24" > < h4 > < a id = "bs130432147582115154460" href = "#bs130432147582115154460" > #< / a > Append text, number, text< / h4 >
2026-02-08 11:17:03 +00:00
< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-14 10:09:54 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1263" > std::stringstream str; str < < " test = " < < k < < " times" ;< / a > < span class = "tooltiptext code" > void AppendStreamStrNumStr(benchmark::State& state) {
2025-04-05 14:21:11 +00:00
for (auto _: state) {
for (unsigned k = 1; k < = 1' 000' 000' 000; k *= 10) {
std::stringstream t;
t < < " test = " < < k < < " times" ;
std::string result = t.str();
#ifdef CHECK_RESULT
if (!result.starts_with(" test = " ) || !result.ends_with(" times" )) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(k);
}
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 3011< / td > < td class = "benchmarkresult" > 3192< / td > < td class = "benchmarkresult" > 10825< / td > < td class = "benchmarkresult" > 11467< / td > < td class = "benchmarkresult" > 25591< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1281" > std::string str = " test = " + std::to_string(k) + " times" ;< / a > < span class = "tooltiptext code" > void AppendStdStringStrNumStr(benchmark::State& state) {
2025-04-05 14:21:11 +00:00
for (auto _: state) {
for (unsigned k = 1; k < = 1' 000' 000' 000; k *= 10) {
std::string result = " test = " + std::to_string(k) + " times" ;
#ifdef CHECK_RESULT
if (!result.starts_with(" test = " ) || !result.ends_with(" times" )) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(k);
}
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 434< / td > < td class = "benchmarkresult" > 505< / td > < td class = "benchmarkresult" > 1066< / td > < td class = "benchmarkresult" > 1162< / td > < td class = "benchmarkresult" > 3456< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1297" > char buf[100]; sprintf(buf, " test = %u times" , k); std::string str = buf;< / a > < span class = "tooltiptext code" > void AppendSprintfStrNumStr(benchmark::State& state) {
2025-04-05 14:21:11 +00:00
for (auto _: state) {
for (unsigned k = 1; k < = 1' 000' 000' 000; k *= 10) {
char buf[100];
std::sprintf(buf, " test = %u times" , k);
std::string result = buf;
#ifdef CHECK_RESULT
if (!result.starts_with(" test = " ) || !result.ends_with(" times" )) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(k);
}
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1391< / td > < td class = "benchmarkresult" > 1544< / td > < td class = "benchmarkresult" > 2723< / td > < td class = "benchmarkresult" > 2743< / td > < td class = "benchmarkresult" > 10939< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1315" > std::string str = std::format(" test = {} times" , k);< / a > < span class = "tooltiptext code" > void AppendFormatStrNumStr(benchmark::State& state) {
2025-04-05 14:21:11 +00:00
for (auto _: state) {
for (unsigned k = 1; k < = 1' 000' 000' 000; k *= 10) {
std::string result = std::format(" test = {} times" , k);
#ifdef CHECK_RESULT
if (!result.starts_with(" test = " ) || !result.ends_with(" times" )) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(k);
}
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1154< / td > < td class = "benchmarkresult" > 1453< / td > < td class = "benchmarkresult" > 1842< / td > < td class = "benchmarkresult" > 2397< / td > < td class = "benchmarkresult" > 5707< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1331" > lstringa< 8> str; str.format(" test = {} times" , k);< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void AppendSimStrStrNumStrF(benchmark::State& state) {
for (auto _: state) {
for (unsigned k = 1; k < = 1' 000' 000' 000; k *= 10) {
T result;
result.format(" test = {} times" , k);
#ifdef CHECK_RESULT
if (!result.starts_with(" test = " ) || !result.ends_with(" times" )) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(k);
}
}
2026-01-21 11:59:17 +00:00
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > В с
In simstr format, the first time it doesn't fit into such a
2026-02-14 10:09:54 +00:00
string without allocation.< / span > < / span > < / td > < td class = "benchmarkresult" > 1374< / td > < td class = "benchmarkresult" > 1547< / td > < td class = "benchmarkresult" > 2012< / td > < td class = "benchmarkresult" > 2712< / td > < td class = "benchmarkresult" > 8601< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1331" > lstringa< 32> str; str.format(" test = {} times" , k);< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void AppendSimStrStrNumStrF(benchmark::State& state) {
for (auto _: state) {
for (unsigned k = 1; k < = 1' 000' 000' 000; k *= 10) {
T result;
result.format(" test = {} times" , k);
#ifdef CHECK_RESULT
if (!result.starts_with(" test = " ) || !result.ends_with(" times" )) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(k);
}
}
2026-01-21 11:59:17 +00:00
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > А
2026-02-14 10:09:54 +00:00
And it fits in this one. Use buffers of the appropriate size right away.< / span > < / span > < / td > < td class = "benchmarkresult" > 997< / td > < td class = "benchmarkresult" > 1083< / td > < td class = "benchmarkresult" > 1004< / td > < td class = "benchmarkresult" > 1521< / td > < td class = "benchmarkresult" > 7339< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1349" > lstringa< 8> str = " test = " + k + " times" ;< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void AppendSimStrStrNumStr(benchmark::State& state) {
for (auto _: state) {
for (unsigned k = 1; k < = 1' 000' 000' 000; k *= 10) {
T result = " test = " _ss + k + " times" ;
#ifdef CHECK_RESULT
if (!result.starts_with(" test = " ) || !result.ends_with(" times" )) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(k);
}
}
2026-01-21 11:59:17 +00:00
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Результат не помещается в SSO, возникает аллокация.
2026-02-14 10:09:54 +00:00
The result does not fit into SSO, an allocation occurs.< / span > < / span > < / td > < td class = "benchmarkresult" > 272< / td > < td class = "benchmarkresult" > 295< / td > < td class = "benchmarkresult" > 821< / td > < td class = "benchmarkresult" > 899< / td > < td class = "benchmarkresult" > 1332< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1349" > lstringa< 32> str = " test = " + k + " times" ;< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void AppendSimStrStrNumStr(benchmark::State& state) {
for (auto _: state) {
for (unsigned k = 1; k < = 1' 000' 000' 000; k *= 10) {
T result = " test = " _ss + k + " times" ;
#ifdef CHECK_RESULT
if (!result.starts_with(" test = " ) || !result.ends_with(" times" )) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(k);
}
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > А
2026-01-21 11:59:17 +00:00
Ещё раз - используйте сразу буфера подходящего размера.
And here and below, the result fits within SSO.
2026-02-14 10:09:54 +00:00
Once again, use appropriately sized buffers from the start.< / span > < / span > < / td > < td class = "benchmarkresult" > 124< / td > < td class = "benchmarkresult" > 149< / td > < td class = "benchmarkresult" > 136< / td > < td class = "benchmarkresult" > 177< / td > < td class = "benchmarkresult" > 570< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1349" > stringa str = " test = " + k + " times" ;< / a > < span class = "tooltiptext code" > template< typename T>
2025-04-05 14:21:11 +00:00
void AppendSimStrStrNumStr(benchmark::State& state) {
for (auto _: state) {
for (unsigned k = 1; k < = 1' 000' 000' 000; k *= 10) {
T result = " test = " _ss + k + " times" ;
#ifdef CHECK_RESULT
if (!result.starts_with(" test = " ) || !result.ends_with(" times" )) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(k);
}
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Под WASM размер SSO 15 символов, что явно не хватает для размещения
2026-01-21 11:59:17 +00:00
результата, отсюда и такое время.
Under WASM, the SSO size is 15 characters, which is clearly not
2026-02-14 10:09:54 +00:00
enough to accommodate the result, hence the long time.< / span > < / span > < / td > < td class = "benchmarkresult" > 117< / td > < td class = "benchmarkresult" > 130< / td > < td class = "benchmarkresult" > 121< / td > < td class = "benchmarkresult" > 178< / td > < td class = "benchmarkresult" > 1253< / td > < / tr >
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' A p p e n d t e x t , n u m b e r , t e x t ' ] = { i d : ' b s 2 4 ' , t e s t s : [
{name:'std::stringstream str; str < < "test = " < < k < < " times " ; ' , data: [ 3011 , 3192 , 10825 , 11467 , 25591 ] } ,
{name:'std::string str = "test = " + std::to_string(k) + " times";',data:[434,505,1066,1162,3456]},
{name:'char buf[100]; sprintf(buf, "test = %u times", k); std::string str = buf;',data:[1391,1544,2723,2743,10939]},
{name:'std::string str = std::format("test = {} times", k);',data:[1154,1453,1842,2397,5707]},
{name:'lstringa< 8 > str; str.format("test = {} times", k);',data:[1374,1547,2012,2712,8601]},
{name:'lstringa< 32 > str; str.format("test = {} times", k);',data:[997,1083,1004,1521,7339]},
{name:'lstringa< 8 > str = "test = " + k + " times";',data:[272,295,821,899,1332]},
{name:'lstringa< 32 > str = "test = " + k + " times";',data:[124,149,136,177,570]},
{name:'stringa str = "test = " + k + " times";',data:[117,130,121,178,1253]}
2025-04-05 14:21:11 +00:00
]}< / script >
2026-02-14 10:09:54 +00:00
< div class = "benchset" id = "bs25" > < h4 > < a id = "bs7106975351756760120" href = "#bs7106975351756760120" > #< / a > Split text and convert to int< / h4 >
2026-02-08 11:17:03 +00:00
< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-14 10:09:54 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1379" > std::string::find + substr + std::strtol< / a > < span class = "tooltiptext code" > void SplitConvertIntStdString(benchmark::State& state) {
2025-04-05 14:21:11 +00:00
std::string numbers = NUMBER_LIST;
for (auto _: state) {
int total = 0;
for (size_t start = 0; start < numbers.length(); ) {
int delim = numbers.find(" -!-" , start);
if (delim == std::string::npos) {
delim = numbers.size();
}
std::string part = numbers.substr(start, delim - start);
total += std::strtol(part.c_str(), nullptr, 0);
start = delim + 3;
}
#ifdef CHECK_RESULT
if (total != 218) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(total);
benchmark::DoNotOptimize(numbers);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 266< / td > < td class = "benchmarkresult" > 275< / td > < td class = "benchmarkresult" > 546< / td > < td class = "benchmarkresult" > 551< / td > < td class = "benchmarkresult" > 1483< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1403" > ssa::splitter + ssa::as_int< / a > < span class = "tooltiptext code" > void SplitConvertIntSimStr(benchmark::State& state) {
2025-04-05 14:21:11 +00:00
stra numbers = NUMBER_LIST;
for (auto _: state) {
int total = 0;
for (auto splitter = numbers.splitter(" -!-" ); !splitter.is_done();) {
total += splitter.next().as_int< int>();
}
#ifdef CHECK_RESULT
if (total != 218) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(total);
benchmark::DoNotOptimize(numbers);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 156< / td > < td class = "benchmarkresult" > 151< / td > < td class = "benchmarkresult" > 165< / td > < td class = "benchmarkresult" > 300< / td > < td class = "benchmarkresult" > 587< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1420" > ssa::splitf + functor< / a > < span class = "tooltiptext code" > void SplitConvertIntSplitf(benchmark::State& state) {
2025-04-05 14:21:11 +00:00
stra numbers = NUMBER_LIST;
for (auto _: state) {
int total = 0;
numbers.splitf< void>(" -!-" , [& ](ssa& part){total += part.as_int< int>();});
#ifdef CHECK_RESULT
if (total != 218) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(total);
benchmark::DoNotOptimize(numbers);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 208< / td > < td class = "benchmarkresult" > 122< / td > < td class = "benchmarkresult" > 191< / td > < td class = "benchmarkresult" > 215< / td > < td class = "benchmarkresult" > 840< / td > < / tr >
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' S p l i t t e x t a n d c o n v e r t t o i n t ' ] = { i d : ' b s 2 5 ' , t e s t s : [
{name:'std::string::find + substr + std::strtol',data:[266,275,546,551,1483]},
{name:'ssa::splitter + ssa::as_int',data:[156,151,165,300,587]},
{name:'ssa::splitf + functor',data:[208,122,191,215,840]}
2025-04-05 14:21:11 +00:00
]}< / script >
2026-02-14 10:09:54 +00:00
< div class = "benchset" id = "bs26" > < h4 > < a id = "bs151373809886162287550" href = "#bs151373809886162287550" > #< / a > Replace symbols in text ~400 symbols< / h4 >
2026-02-08 11:17:03 +00:00
< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-14 10:09:54 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1441" > Naive (and wrong) replace symbols with std::string find + replace< / a > < span class = "tooltiptext code" > void ReplaceSymbolsStdStringNaiveWrong(benchmark::State& state) {
2025-04-05 14:21:11 +00:00
std::string_view source =
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
;
std::vector< std::pair< u8s, std::string_view>> repl = {
{' & ' , " & amp;" },
{' -' , " " },
{' < ' , " & lt;" },
{' >' , " & gt;" },
{' \' ' , " & #39;" },
{' \" ' , " & quot;" }
};
auto repl_all = [](std::string& str, char s, std::string_view repl) {
size_t start_pos = 0;
while((start_pos = str.find(s, start_pos)) != std::string::npos) {
str.replace(start_pos, 1, repl);
start_pos += repl.length();
}
};
for (auto _: state) {
std::string result{source};
for (const auto& r : repl) {
repl_all(result, r.first, r.second);
}
#ifdef CHECK_RESULT
if (result
!=
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(repl);
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Это наивная реализация, которая неверно отработает на
таких заменах, как 'a'->'b' и 'b'->'a'. Н о
2026-01-21 11:59:17 +00:00
то работает быстро.
This is a naive implementation that will fail to handle substitutions
such as 'a'->'b' and 'b'->'a'. But if the substitutions don't conflict,
2026-02-14 10:09:54 +00:00
it works quickly.< / span > < / span > < / td > < td class = "benchmarkresult" > 835< / td > < td class = "benchmarkresult" > 834< / td > < td class = "benchmarkresult" > 1108< / td > < td class = "benchmarkresult" > 1224< / td > < td class = "benchmarkresult" > 4781< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1495" > replace symbols with std::string find_first_of + replace< / a > < span class = "tooltiptext code" > void ReplaceSymbolsStdStringNaiveRight(benchmark::State& state) {
2025-04-05 14:21:11 +00:00
std::string_view source =
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
;
std::vector< std::pair< u8s, std::string_view>> repl = {
{' -' , " " },
{' < ' , " & lt;" },
{' >' , " & gt;" },
{' \' ' , " & #39;" },
{' \" ' , " & quot;" },
{' & ' , " & amp;" },
};
for (auto _: state) {
std::string result{source};
std::string pattern;
for (const auto& r : repl) {
pattern += r.first;
}
size_t start_pos = 0;
while((start_pos = result.find_first_of(pattern, start_pos)) != std::string::npos) {
size_t idx = pattern.find(result[start_pos]);
result.replace(start_pos, 1, repl[idx].second);
start_pos += repl[idx].second.length();
}
#ifdef CHECK_RESULT
if (result
!=
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(repl);
}
2026-01-21 11:59:17 +00:00
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Дальше уже правильные реализации, не зависящие от конфликтующих замен.
Further, there are correct implementations that do not depend on
2026-02-14 10:09:54 +00:00
conflicting replacements.< / span > < / span > < / td > < td class = "benchmarkresult" > 2459< / td > < td class = "benchmarkresult" > 2603< / td > < td class = "benchmarkresult" > 2009< / td > < td class = "benchmarkresult" > 2264< / td > < td class = "benchmarkresult" > 8914< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1549" > replace symbols with std::string_view find_first_of + copy< / a > < span class = "tooltiptext code" > void ReplaceSymbolsStdString(benchmark::State& state) {
2025-04-05 14:21:11 +00:00
std::string_view source =
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
;
2025-11-26 19:15:50 +00:00
2025-04-05 14:21:11 +00:00
const std::string_view repl_from = " -< >' \" & " ;
const std::string_view repl_to[] = {" " , " & lt;" , " & gt;" , " & #39;" , " & quot;" , " & amp;" };
for (auto _: state) {
std::string result;
for (size_t start = 0; start < source.size();) {
size_t idx = source.find_first_of(repl_from, start);
if (idx == std::string::npos) {
result += source.substr(start);
break;
}
if (idx > start) {
result += source.substr(start, idx - start);
}
size_t what = repl_from.find(source[idx]);
result += repl_to[what];
start = idx + 1;
}
#ifdef CHECK_RESULT
if (result
!=
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1128< / td > < td class = "benchmarkresult" > 1037< / td > < td class = "benchmarkresult" > 2277< / td > < td class = "benchmarkresult" > 2662< / td > < td class = "benchmarkresult" > 4601< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1602" > replace runtime symbols with string expressions and without remembering all search results< / a > < span class = "tooltiptext code" > template< bool UseVector>
2025-04-05 14:21:11 +00:00
void ReplaceSymbolsDynPatternSimStr(benchmark::State& state) {
stra source =
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
;
std::vector< std::pair< u8s, ssa>> repl = {
{' -' , " " },
{' < ' , " & lt;" },
{' >' , " & gt;" },
{' \' ' , " & #39;" },
{' \" ' , " & quot;" },
{' & ' , " & amp;" },
};
for (auto _: state) {
stringa result = expr_replace_symbols< u8s, UseVector>{source, repl};
#ifdef CHECK_RESULT
if (result
!=
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(repl);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1268< / td > < td class = "benchmarkresult" > 1542< / td > < td class = "benchmarkresult" > 1448< / td > < td class = "benchmarkresult" > 1582< / td > < td class = "benchmarkresult" > 4270< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1602" > replace runtime symbols with simstr and memorization of all search results< / a > < span class = "tooltiptext code" > template< bool UseVector>
2025-04-05 14:21:11 +00:00
void ReplaceSymbolsDynPatternSimStr(benchmark::State& state) {
stra source =
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
;
std::vector< std::pair< u8s, ssa>> repl = {
{' -' , " " },
{' < ' , " & lt;" },
{' >' , " & gt;" },
{' \' ' , " & #39;" },
{' \" ' , " & quot;" },
{' & ' , " & amp;" },
};
for (auto _: state) {
stringa result = expr_replace_symbols< u8s, UseVector>{source, repl};
#ifdef CHECK_RESULT
if (result
!=
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(repl);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1010< / td > < td class = "benchmarkresult" > 1156< / td > < td class = "benchmarkresult" > 1363< / td > < td class = "benchmarkresult" > 1398< / td > < td class = "benchmarkresult" > 3830< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1649" > replace const symbols with string expressions and without remembering all search results< / a > < span class = "tooltiptext code" > template< bool UseVector>
2025-04-05 14:21:11 +00:00
void ReplaceSymbolsCons2PatternSimStr(benchmark::State& state) {
stra source =
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
;
for (auto _: state) {
stringa result = e_repl_const_symbols< UseVector>(source,
' -' , " " ,
' < ' , " & lt;" ,
' >' , " & gt;" ,
' \' ' , " & #39;" ,
' \" ' , " & quot;" ,
' & ' , " & amp;"
);
#ifdef CHECK_RESULT
if (result
!=
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1061< / td > < td class = "benchmarkresult" > 1193< / td > < td class = "benchmarkresult" > 1229< / td > < td class = "benchmarkresult" > 1251< / td > < td class = "benchmarkresult" > 3372< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1649" > replace const symbols with string expressions and memorization of all search results< / a > < span class = "tooltiptext code" > template< bool UseVector>
2025-04-05 14:21:11 +00:00
void ReplaceSymbolsCons2PatternSimStr(benchmark::State& state) {
stra source =
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
" ksjd-fksjd \" dkjfs-jkhdf dfj ' kdkd \" dkfdkfkdjf"
;
for (auto _: state) {
stringa result = e_repl_const_symbols< UseVector>(source,
' -' , " " ,
' < ' , " & lt;" ,
' >' , " & gt;" ,
' \' ' , " & #39;" ,
' \" ' , " & quot;" ,
' & ' , " & amp;"
);
#ifdef CHECK_RESULT
if (result
!=
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
" ksjdfksjd & quot;dkjfsjkhdf dfj & #39; kdkd & quot;dkfdkfkdjf"
) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 840< / td > < td class = "benchmarkresult" > 837< / td > < td class = "benchmarkresult" > 1096< / td > < td class = "benchmarkresult" > 1243< / td > < td class = "benchmarkresult" > 2905< / td > < / tr >
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' R e p l a c e s y m b o l s i n t e x t ~ 4 0 0 s y m b o l s ' ] = { i d : ' b s 2 6 ' , t e s t s : [
{name:'Naive (and wrong) replace symbols with std::string find + replace',data:[835,834,1108,1224,4781]},
{name:'replace symbols with std::string find_first_of + replace',data:[2459,2603,2009,2264,8914]},
{name:'replace symbols with std::string_view find_first_of + copy',data:[1128,1037,2277,2662,4601]},
{name:'replace runtime symbols with string expressions and without remembering all search results',data:[1268,1542,1448,1582,4270]},
{name:'replace runtime symbols with simstr and memorization of all search results',data:[1010,1156,1363,1398,3830]},
{name:'replace const symbols with string expressions and without remembering all search results',data:[1061,1193,1229,1251,3372]},
{name:'replace const symbols with string expressions and memorization of all search results',data:[840,837,1096,1243,2905]}
2025-04-05 14:21:11 +00:00
]}< / script >
2026-02-14 10:09:54 +00:00
< div class = "benchset" id = "bs27" > < h4 > < a id = "bs96756339547767401190" href = "#bs96756339547767401190" > #< / a > Replace symbols in text ~40 symbols< / h4 >
2026-02-08 11:17:03 +00:00
< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-14 10:09:54 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1703" > Short Naive (and wrong) replace symbols with std::string find + replace< / a > < span class = "tooltiptext code" > void ShortReplaceSymbolsStdStringNaiveWrong(benchmark::State& state) {
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std::string_view source =
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
;
std::vector< std::pair< u8s, std::string_view>> repl = {
{' & ' , " & amp;" },
{' -' , " " },
{' < ' , " & lt;" },
{' >' , " & gt;" },
{' \' ' , " & #39;" },
{' \" ' , " & quot;" }
};
auto repl_all = [](std::string& str, char s, std::string_view repl) {
size_t start_pos = 0;
while((start_pos = str.find(s, start_pos)) != std::string::npos) {
str.replace(start_pos, 1, repl);
start_pos += repl.length();
}
};
for (auto _: state) {
std::string result{source};
for (const auto& r : repl) {
repl_all(result, r.first, r.second);
}
#ifdef CHECK_RESULT
if (result
!=
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(repl);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 150< / td > < td class = "benchmarkresult" > 154< / td > < td class = "benchmarkresult" > 305< / td > < td class = "benchmarkresult" > 337< / td > < td class = "benchmarkresult" > 866< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1743" > Short replace symbols with std::string find_first_of + replace< / a > < span class = "tooltiptext code" > void ShortReplaceSymbolsStdStringNaiveRight(benchmark::State& state) {
2025-04-05 14:21:11 +00:00
std::string_view source =
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
;
std::vector< std::pair< u8s, std::string_view>> repl = {
{' -' , " " },
{' < ' , " & lt;" },
{' >' , " & gt;" },
{' \' ' , " & #39;" },
{' \" ' , " & quot;" },
{' & ' , " & amp;" },
};
for (auto _: state) {
std::string result{source};
std::string pattern;
for (const auto& r : repl) {
pattern += r.first;
}
size_t start_pos = 0;
while((start_pos = result.find_first_of(pattern, start_pos)) != std::string::npos) {
size_t idx = pattern.find(result[start_pos]);
result.replace(start_pos, 1, repl[idx].second);
start_pos += repl[idx].second.length();
}
#ifdef CHECK_RESULT
if (result
!=
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(repl);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 313< / td > < td class = "benchmarkresult" > 301< / td > < td class = "benchmarkresult" > 356< / td > < td class = "benchmarkresult" > 423< / td > < td class = "benchmarkresult" > 1328< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1783" > Short replace symbols with std::string_view find_first_of + copy< / a > < span class = "tooltiptext code" > void ShortReplaceSymbolsStdString(benchmark::State& state) {
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std::string_view source =
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
;
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const std::string_view repl_from = " -< >' \" & " ;
const std::string_view repl_to[] = {" " , " & lt;" , " & gt;" , " & #39;" , " & quot;" , " & amp;" };
for (auto _: state) {
std::string result;
for (size_t start = 0; start < source.size();) {
size_t idx = source.find_first_of(repl_from, start);
if (idx == std::string::npos) {
result += source.substr(start);
break;
}
if (idx > start) {
result += source.substr(start, idx - start);
}
size_t what = repl_from.find_first_of(source[idx]);
result += repl_to[what];
start = idx + 1;
}
#ifdef CHECK_RESULT
if (result
!=
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 153< / td > < td class = "benchmarkresult" > 154< / td > < td class = "benchmarkresult" > 307< / td > < td class = "benchmarkresult" > 350< / td > < td class = "benchmarkresult" > 797< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1822" > Short replace runtime symbols with string expressions and without remembering all search results< / a > < span class = "tooltiptext code" > template< bool UseVector>
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void ShortReplaceSymbolsDynPatternSimStr(benchmark::State& state) {
stra source =
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
;
std::vector< std::pair< u8s, ssa>> repl = {
{' -' , " " },
{' < ' , " & lt;" },
{' >' , " & gt;" },
{' \' ' , " & #39;" },
{' \" ' , " & quot;" },
{' & ' , " & amp;" },
};
for (auto _: state) {
stringa result = expr_replace_symbols< u8s, UseVector>{source, repl};
#ifdef CHECK_RESULT
if (result
!=
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(repl);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 172< / td > < td class = "benchmarkresult" > 178< / td > < td class = "benchmarkresult" > 259< / td > < td class = "benchmarkresult" > 298< / td > < td class = "benchmarkresult" > 656< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1822" > Short replace runtime symbols with simstr and memorization of all search results< / a > < span class = "tooltiptext code" > template< bool UseVector>
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void ShortReplaceSymbolsDynPatternSimStr(benchmark::State& state) {
stra source =
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
;
std::vector< std::pair< u8s, ssa>> repl = {
{' -' , " " },
{' < ' , " & lt;" },
{' >' , " & gt;" },
{' \' ' , " & #39;" },
{' \" ' , " & quot;" },
{' & ' , " & amp;" },
};
for (auto _: state) {
stringa result = expr_replace_symbols< u8s, UseVector>{source, repl};
#ifdef CHECK_RESULT
if (result
!=
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(repl);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 173< / td > < td class = "benchmarkresult" > 192< / td > < td class = "benchmarkresult" > 355< / td > < td class = "benchmarkresult" > 396< / td > < td class = "benchmarkresult" > 831< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1855" > Short replace const symbols with string expressions and without remembering all search results< / a > < span class = "tooltiptext code" > template< bool UseVector>
2025-04-05 14:21:11 +00:00
void ShortReplaceSymbolsCons2PatternSimStr(benchmark::State& state) {
stra source =
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
;
for (auto _: state) {
stringa result = e_repl_const_symbols< UseVector>(source,
' -' , " " ,
' < ' , " & lt;" ,
' >' , " & gt;" ,
' \' ' , " & #39;" ,
' \" ' , " & quot;" ,
' & ' , " & amp;"
);
#ifdef CHECK_RESULT
if (result
!=
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 138< / td > < td class = "benchmarkresult" > 149< / td > < td class = "benchmarkresult" > 199< / td > < td class = "benchmarkresult" > 253< / td > < td class = "benchmarkresult" > 438< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1855" > Short replace const symbols with string expressions and memorization of all search results< / a > < span class = "tooltiptext code" > template< bool UseVector>
2025-04-05 14:21:11 +00:00
void ShortReplaceSymbolsCons2PatternSimStr(benchmark::State& state) {
stra source =
" abcdefg124 < jhsfjsh sjdfsh jfhjd & & jdjdj >"
;
for (auto _: state) {
stringa result = e_repl_const_symbols< UseVector>(source,
' -' , " " ,
' < ' , " & lt;" ,
' >' , " & gt;" ,
' \' ' , " & #39;" ,
' \" ' , " & quot;" ,
' & ' , " & amp;"
);
#ifdef CHECK_RESULT
if (result
!=
" abcdefg124 & lt; jhsfjsh sjdfsh jfhjd & amp;& amp; jdjdj & gt;"
) {
state.SkipWithError(" not equal" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 141< / td > < td class = "benchmarkresult" > 134< / td > < td class = "benchmarkresult" > 289< / td > < td class = "benchmarkresult" > 349< / td > < td class = "benchmarkresult" > 553< / td > < / tr >
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' R e p l a c e s y m b o l s i n t e x t ~ 4 0 s y m b o l s ' ] = { i d : ' b s 2 7 ' , t e s t s : [
{name:'Short Naive (and wrong) replace symbols with std::string find + replace',data:[150,154,305,337,866]},
{name:'Short replace symbols with std::string find_first_of + replace',data:[313,301,356,423,1328]},
{name:'Short replace symbols with std::string_view find_first_of + copy',data:[153,154,307,350,797]},
{name:'Short replace runtime symbols with string expressions and without remembering all search results',data:[172,178,259,298,656]},
{name:'Short replace runtime symbols with simstr and memorization of all search results',data:[173,192,355,396,831]},
{name:'Short replace const symbols with string expressions and without remembering all search results',data:[138,149,199,253,438]},
{name:'Short replace const symbols with string expressions and memorization of all search results',data:[141,134,289,349,553]}
2025-04-05 14:21:11 +00:00
]}< / script >
2026-02-14 10:09:54 +00:00
< div class = "benchset" id = "bs28" > < h4 > < a id = "bs77745698784557935900" href = "#bs77745698784557935900" > #< / a > Replace All Str To Longer Size< / h4 >
2026-02-08 11:17:03 +00:00
< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-14 10:09:54 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1894" > replace bb to ---- in std::string|64< / a > < span class = "tooltiptext code" > template< size_t Long>
2025-04-05 14:21:11 +00:00
void ReplaceAllLongerStdString(benchmark::State& state) {
std::string_view source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
std::string_view sample = " aaaaaaaaaaaaaaaaaaa----baaaaaaaa--------aaaaabaaaaaaaaaaaaaaaaaaaaa----a" ;
std::string_view pattern = " bb" ;
std::string_view repl = " ----" ;
std::string big_source, big_sample;
for (int i = 0; i < Long; i++) {
big_source += source;
big_sample += sample;
}
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for (auto _: state) {
std::string result{big_source};
size_t start_pos = 0;
while((start_pos = result.find(pattern, start_pos)) != std::string::npos) {
result.replace(start_pos, pattern.length(), repl);
start_pos += repl.length();
}
#ifdef CHECK_RESULT
if (result != big_sample) {
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(pattern);
benchmark::DoNotOptimize(repl);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 157< / td > < td class = "benchmarkresult" > 152< / td > < td class = "benchmarkresult" > 217< / td > < td class = "benchmarkresult" > 241< / td > < td class = "benchmarkresult" > 754< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1894" > replace bb to ---- in std::string|256< / a > < span class = "tooltiptext code" > template< size_t Long>
2025-04-05 14:21:11 +00:00
void ReplaceAllLongerStdString(benchmark::State& state) {
std::string_view source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
std::string_view sample = " aaaaaaaaaaaaaaaaaaa----baaaaaaaa--------aaaaabaaaaaaaaaaaaaaaaaaaaa----a" ;
std::string_view pattern = " bb" ;
std::string_view repl = " ----" ;
std::string big_source, big_sample;
for (int i = 0; i < Long; i++) {
big_source += source;
big_sample += sample;
}
2025-11-26 19:15:50 +00:00
2025-04-05 14:21:11 +00:00
for (auto _: state) {
std::string result{big_source};
size_t start_pos = 0;
while((start_pos = result.find(pattern, start_pos)) != std::string::npos) {
result.replace(start_pos, pattern.length(), repl);
start_pos += repl.length();
}
#ifdef CHECK_RESULT
if (result != big_sample) {
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(pattern);
benchmark::DoNotOptimize(repl);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 527< / td > < td class = "benchmarkresult" > 463< / td > < td class = "benchmarkresult" > 736< / td > < td class = "benchmarkresult" > 791< / td > < td class = "benchmarkresult" > 2292< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1894" > replace bb to ---- in std::string|512< / a > < span class = "tooltiptext code" > template< size_t Long>
2025-04-05 14:21:11 +00:00
void ReplaceAllLongerStdString(benchmark::State& state) {
std::string_view source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
std::string_view sample = " aaaaaaaaaaaaaaaaaaa----baaaaaaaa--------aaaaabaaaaaaaaaaaaaaaaaaaaa----a" ;
std::string_view pattern = " bb" ;
std::string_view repl = " ----" ;
std::string big_source, big_sample;
for (int i = 0; i < Long; i++) {
big_source += source;
big_sample += sample;
}
2025-11-26 19:15:50 +00:00
2025-04-05 14:21:11 +00:00
for (auto _: state) {
std::string result{big_source};
size_t start_pos = 0;
while((start_pos = result.find(pattern, start_pos)) != std::string::npos) {
result.replace(start_pos, pattern.length(), repl);
start_pos += repl.length();
}
#ifdef CHECK_RESULT
if (result != big_sample) {
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(pattern);
benchmark::DoNotOptimize(repl);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1332< / td > < td class = "benchmarkresult" > 1323< / td > < td class = "benchmarkresult" > 1385< / td > < td class = "benchmarkresult" > 1425< / td > < td class = "benchmarkresult" > 4359< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1894" > replace bb to ---- in std::string|1024< / a > < span class = "tooltiptext code" > template< size_t Long>
2025-04-05 14:21:11 +00:00
void ReplaceAllLongerStdString(benchmark::State& state) {
std::string_view source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
std::string_view sample = " aaaaaaaaaaaaaaaaaaa----baaaaaaaa--------aaaaabaaaaaaaaaaaaaaaaaaaaa----a" ;
std::string_view pattern = " bb" ;
std::string_view repl = " ----" ;
std::string big_source, big_sample;
for (int i = 0; i < Long; i++) {
big_source += source;
big_sample += sample;
}
2025-11-26 19:15:50 +00:00
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for (auto _: state) {
std::string result{big_source};
size_t start_pos = 0;
while((start_pos = result.find(pattern, start_pos)) != std::string::npos) {
result.replace(start_pos, pattern.length(), repl);
start_pos += repl.length();
}
#ifdef CHECK_RESULT
if (result != big_sample) {
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(pattern);
benchmark::DoNotOptimize(repl);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 2359< / td > < td class = "benchmarkresult" > 2217< / td > < td class = "benchmarkresult" > 3048< / td > < td class = "benchmarkresult" > 3130< / td > < td class = "benchmarkresult" > 8819< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1894" > replace bb to ---- in std::string|2048< / a > < span class = "tooltiptext code" > template< size_t Long>
2025-04-05 14:21:11 +00:00
void ReplaceAllLongerStdString(benchmark::State& state) {
std::string_view source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
std::string_view sample = " aaaaaaaaaaaaaaaaaaa----baaaaaaaa--------aaaaabaaaaaaaaaaaaaaaaaaaaa----a" ;
std::string_view pattern = " bb" ;
std::string_view repl = " ----" ;
std::string big_source, big_sample;
for (int i = 0; i < Long; i++) {
big_source += source;
big_sample += sample;
}
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for (auto _: state) {
std::string result{big_source};
size_t start_pos = 0;
while((start_pos = result.find(pattern, start_pos)) != std::string::npos) {
result.replace(start_pos, pattern.length(), repl);
start_pos += repl.length();
}
#ifdef CHECK_RESULT
if (result != big_sample) {
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(pattern);
benchmark::DoNotOptimize(repl);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 5479< / td > < td class = "benchmarkresult" > 5811< / td > < td class = "benchmarkresult" > 7662< / td > < td class = "benchmarkresult" > 7950< / td > < td class = "benchmarkresult" > 18166< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1928" > replace bb to ---- in lstringa< 8>|64< / a > < span class = "tooltiptext code" > template< size_t N, size_t Count>
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void ReplaceAllLongerSimString(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa----baaaaaaaa--------aaaaabaaaaaaaaaaaaaaaaaaaaa----a" ;
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lstringa< 2048> big_source{Count, source}, big_sample{Count, sample};
for (auto _: state) {
lstringa< N> result = big_source;
result.replace(" bb" , " ----" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 137< / td > < td class = "benchmarkresult" > 137< / td > < td class = "benchmarkresult" > 218< / td > < td class = "benchmarkresult" > 234< / td > < td class = "benchmarkresult" > 590< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1928" > replace bb to ---- in lstringa< 8>|256< / a > < span class = "tooltiptext code" > template< size_t N, size_t Count>
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void ReplaceAllLongerSimString(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa----baaaaaaaa--------aaaaabaaaaaaaaaaaaaaaaaaaaa----a" ;
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lstringa< 2048> big_source{Count, source}, big_sample{Count, sample};
for (auto _: state) {
lstringa< N> result = big_source;
result.replace(" bb" , " ----" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 426< / td > < td class = "benchmarkresult" > 451< / td > < td class = "benchmarkresult" > 613< / td > < td class = "benchmarkresult" > 662< / td > < td class = "benchmarkresult" > 1916< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1928" > replace bb to ---- in lstringa< 8>|512< / a > < span class = "tooltiptext code" > template< size_t N, size_t Count>
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void ReplaceAllLongerSimString(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa----baaaaaaaa--------aaaaabaaaaaaaaaaaaaaaaaaaaa----a" ;
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lstringa< 2048> big_source{Count, source}, big_sample{Count, sample};
for (auto _: state) {
lstringa< N> result = big_source;
result.replace(" bb" , " ----" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 781< / td > < td class = "benchmarkresult" > 857< / td > < td class = "benchmarkresult" > 1056< / td > < td class = "benchmarkresult" > 1118< / td > < td class = "benchmarkresult" > 3332< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1928" > replace bb to ---- in lstringa< 8>|1024< / a > < span class = "tooltiptext code" > template< size_t N, size_t Count>
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void ReplaceAllLongerSimString(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa----baaaaaaaa--------aaaaabaaaaaaaaaaaaaaaaaaaaa----a" ;
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lstringa< 2048> big_source{Count, source}, big_sample{Count, sample};
for (auto _: state) {
lstringa< N> result = big_source;
result.replace(" bb" , " ----" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1574< / td > < td class = "benchmarkresult" > 1683< / td > < td class = "benchmarkresult" > 1894< / td > < td class = "benchmarkresult" > 1999< / td > < td class = "benchmarkresult" > 6057< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1928" > replace bb to ---- in lstringa< 8>|2048< / a > < span class = "tooltiptext code" > template< size_t N, size_t Count>
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void ReplaceAllLongerSimString(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa----baaaaaaaa--------aaaaabaaaaaaaaaaaaaaaaaaaaa----a" ;
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lstringa< 2048> big_source{Count, source}, big_sample{Count, sample};
for (auto _: state) {
lstringa< N> result = big_source;
result.replace(" bb" , " ----" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 3024< / td > < td class = "benchmarkresult" > 3386< / td > < td class = "benchmarkresult" > 3567< / td > < td class = "benchmarkresult" > 3914< / td > < td class = "benchmarkresult" > 11959< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1951" > replace bb to ---- by init stringa|64< / a > < span class = "tooltiptext code" > template< size_t Count>
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void ReplaceAllLongerSimStringExpr(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa----baaaaaaaa--------aaaaabaaaaaaaaaaaaaaaaaaaaa----a" ;
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lstringa< 2048> big_source{Count, source}, big_sample{Count, sample};
for (auto _: state) {
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stringa result = e_repl(big_source, " bb" , " ----" );
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#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 91.9< / td > < td class = "benchmarkresult" > 90.1< / td > < td class = "benchmarkresult" > 170< / td > < td class = "benchmarkresult" > 195< / td > < td class = "benchmarkresult" > 403< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1951" > replace bb to ---- by init stringa|256< / a > < span class = "tooltiptext code" > template< size_t Count>
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void ReplaceAllLongerSimStringExpr(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa----baaaaaaaa--------aaaaabaaaaaaaaaaaaaaaaaaaaa----a" ;
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lstringa< 2048> big_source{Count, source}, big_sample{Count, sample};
for (auto _: state) {
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stringa result = e_repl(big_source, " bb" , " ----" );
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#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 305< / td > < td class = "benchmarkresult" > 294< / td > < td class = "benchmarkresult" > 369< / td > < td class = "benchmarkresult" > 465< / td > < td class = "benchmarkresult" > 1149< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1951" > replace bb to ---- by init stringa|512< / a > < span class = "tooltiptext code" > template< size_t Count>
2025-04-05 14:21:11 +00:00
void ReplaceAllLongerSimStringExpr(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa----baaaaaaaa--------aaaaabaaaaaaaaaaaaaaaaaaaaa----a" ;
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lstringa< 2048> big_source{Count, source}, big_sample{Count, sample};
for (auto _: state) {
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stringa result = e_repl(big_source, " bb" , " ----" );
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#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 700< / td > < td class = "benchmarkresult" > 673< / td > < td class = "benchmarkresult" > 806< / td > < td class = "benchmarkresult" > 1064< / td > < td class = "benchmarkresult" > 2695< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1951" > replace bb to ---- by init stringa|1024< / a > < span class = "tooltiptext code" > template< size_t Count>
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void ReplaceAllLongerSimStringExpr(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa----baaaaaaaa--------aaaaabaaaaaaaaaaaaaaaaaaaaa----a" ;
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lstringa< 2048> big_source{Count, source}, big_sample{Count, sample};
for (auto _: state) {
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stringa result = e_repl(big_source, " bb" , " ----" );
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#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1564< / td > < td class = "benchmarkresult" > 1470< / td > < td class = "benchmarkresult" > 1658< / td > < td class = "benchmarkresult" > 2218< / td > < td class = "benchmarkresult" > 5688< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1951" > replace bb to ---- by init stringa|2048< / a > < span class = "tooltiptext code" > template< size_t Count>
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void ReplaceAllLongerSimStringExpr(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa----baaaaaaaa--------aaaaabaaaaaaaaaaaaaaaaaaaaa----a" ;
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lstringa< 2048> big_source{Count, source}, big_sample{Count, sample};
for (auto _: state) {
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stringa result = e_repl(big_source, " bb" , " ----" );
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#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 3148< / td > < td class = "benchmarkresult" > 2966< / td > < td class = "benchmarkresult" > 3213< / td > < td class = "benchmarkresult" > 4628< / td > < td class = "benchmarkresult" > 11882< / td > < / tr >
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' R e p l a c e A l l S t r T o L o n g e r S i z e ' ] = { i d : ' b s 2 8 ' , t e s t s : [
{name:'replace bb to ---- in std::string|64',data:[157,152,217,241,754]},
{name:'replace bb to ---- in std::string|256',data:[527,463,736,791,2292]},
{name:'replace bb to ---- in std::string|512',data:[1332,1323,1385,1425,4359]},
{name:'replace bb to ---- in std::string|1024',data:[2359,2217,3048,3130,8819]},
{name:'replace bb to ---- in std::string|2048',data:[5479,5811,7662,7950,18166]},
{name:'replace bb to ---- in lstringa< 8 > |64',data:[137,137,218,234,590]},
{name:'replace bb to ---- in lstringa< 8 > |256',data:[426,451,613,662,1916]},
{name:'replace bb to ---- in lstringa< 8 > |512',data:[781,857,1056,1118,3332]},
{name:'replace bb to ---- in lstringa< 8 > |1024',data:[1574,1683,1894,1999,6057]},
{name:'replace bb to ---- in lstringa< 8 > |2048',data:[3024,3386,3567,3914,11959]},
{name:'replace bb to ---- by init stringa|64',data:[91.9,90.1,170,195,403]},
{name:'replace bb to ---- by init stringa|256',data:[305,294,369,465,1149]},
{name:'replace bb to ---- by init stringa|512',data:[700,673,806,1064,2695]},
{name:'replace bb to ---- by init stringa|1024',data:[1564,1470,1658,2218,5688]},
{name:'replace bb to ---- by init stringa|2048',data:[3148,2966,3213,4628,11882]}
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]}< / script >
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< div class = "benchset" id = "bs29" > < h4 > < a id = "bs74494088982050398630" href = "#bs74494088982050398630" > #< / a > Replace All Str To Same Size< / h4 >
2026-02-08 11:17:03 +00:00
< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-14 10:09:54 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1973" > replace bb to -- in std::string|64< / a > < span class = "tooltiptext code" > template< size_t Long>
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void ReplaceAllEqualStdString(benchmark::State& state) {
std::string_view source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
std::string_view sample = " aaaaaaaaaaaaaaaaaaa--baaaaaaaa----aaaaabaaaaaaaaaaaaaaaaaaaaa--a" ;
std::string_view pattern = " bb" ;
std::string_view repl = " --" ;
std::string big_source, big_sample;
for (int i = 0; i < Long; i++) {
big_source += source;
big_sample += sample;
}
for (auto _: state) {
std::string result{big_source};
size_t start_pos = 0;
while((start_pos = result.find(pattern, start_pos)) != std::string::npos) {
result.replace(start_pos, pattern.length(), repl);
start_pos += repl.length();
}
#ifdef CHECK_RESULT
if (result != big_sample) {
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(pattern);
benchmark::DoNotOptimize(repl);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 131< / td > < td class = "benchmarkresult" > 113< / td > < td class = "benchmarkresult" > 186< / td > < td class = "benchmarkresult" > 200< / td > < td class = "benchmarkresult" > 556< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1973" > replace bb to -- in std::string|256< / a > < span class = "tooltiptext code" > template< size_t Long>
2025-04-05 14:21:11 +00:00
void ReplaceAllEqualStdString(benchmark::State& state) {
std::string_view source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
std::string_view sample = " aaaaaaaaaaaaaaaaaaa--baaaaaaaa----aaaaabaaaaaaaaaaaaaaaaaaaaa--a" ;
std::string_view pattern = " bb" ;
std::string_view repl = " --" ;
std::string big_source, big_sample;
for (int i = 0; i < Long; i++) {
big_source += source;
big_sample += sample;
}
for (auto _: state) {
std::string result{big_source};
size_t start_pos = 0;
while((start_pos = result.find(pattern, start_pos)) != std::string::npos) {
result.replace(start_pos, pattern.length(), repl);
start_pos += repl.length();
}
#ifdef CHECK_RESULT
if (result != big_sample) {
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(pattern);
benchmark::DoNotOptimize(repl);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 367< / td > < td class = "benchmarkresult" > 360< / td > < td class = "benchmarkresult" > 464< / td > < td class = "benchmarkresult" > 527< / td > < td class = "benchmarkresult" > 1773< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1973" > replace bb to -- in std::string|512< / a > < span class = "tooltiptext code" > template< size_t Long>
2025-04-05 14:21:11 +00:00
void ReplaceAllEqualStdString(benchmark::State& state) {
std::string_view source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
std::string_view sample = " aaaaaaaaaaaaaaaaaaa--baaaaaaaa----aaaaabaaaaaaaaaaaaaaaaaaaaa--a" ;
std::string_view pattern = " bb" ;
std::string_view repl = " --" ;
std::string big_source, big_sample;
for (int i = 0; i < Long; i++) {
big_source += source;
big_sample += sample;
}
for (auto _: state) {
std::string result{big_source};
size_t start_pos = 0;
while((start_pos = result.find(pattern, start_pos)) != std::string::npos) {
result.replace(start_pos, pattern.length(), repl);
start_pos += repl.length();
}
#ifdef CHECK_RESULT
if (result != big_sample) {
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(pattern);
benchmark::DoNotOptimize(repl);
}
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}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 722< / td > < td class = "benchmarkresult" > 729< / td > < td class = "benchmarkresult" > 843< / td > < td class = "benchmarkresult" > 925< / td > < td class = "benchmarkresult" > 3125< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1973" > replace bb to -- in std::string|1024< / a > < span class = "tooltiptext code" > template< size_t Long>
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void ReplaceAllEqualStdString(benchmark::State& state) {
std::string_view source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
std::string_view sample = " aaaaaaaaaaaaaaaaaaa--baaaaaaaa----aaaaabaaaaaaaaaaaaaaaaaaaaa--a" ;
std::string_view pattern = " bb" ;
std::string_view repl = " --" ;
std::string big_source, big_sample;
for (int i = 0; i < Long; i++) {
big_source += source;
big_sample += sample;
}
for (auto _: state) {
std::string result{big_source};
size_t start_pos = 0;
while((start_pos = result.find(pattern, start_pos)) != std::string::npos) {
result.replace(start_pos, pattern.length(), repl);
start_pos += repl.length();
}
#ifdef CHECK_RESULT
if (result != big_sample) {
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(pattern);
benchmark::DoNotOptimize(repl);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1429< / td > < td class = "benchmarkresult" > 1303< / td > < td class = "benchmarkresult" > 1576< / td > < td class = "benchmarkresult" > 1849< / td > < td class = "benchmarkresult" > 6361< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L1973" > replace bb to -- in std::string|2048< / a > < span class = "tooltiptext code" > template< size_t Long>
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void ReplaceAllEqualStdString(benchmark::State& state) {
std::string_view source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
std::string_view sample = " aaaaaaaaaaaaaaaaaaa--baaaaaaaa----aaaaabaaaaaaaaaaaaaaaaaaaaa--a" ;
std::string_view pattern = " bb" ;
std::string_view repl = " --" ;
std::string big_source, big_sample;
for (int i = 0; i < Long; i++) {
big_source += source;
big_sample += sample;
}
for (auto _: state) {
std::string result{big_source};
size_t start_pos = 0;
while((start_pos = result.find(pattern, start_pos)) != std::string::npos) {
result.replace(start_pos, pattern.length(), repl);
start_pos += repl.length();
}
#ifdef CHECK_RESULT
if (result != big_sample) {
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(pattern);
benchmark::DoNotOptimize(repl);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 2801< / td > < td class = "benchmarkresult" > 2642< / td > < td class = "benchmarkresult" > 3142< / td > < td class = "benchmarkresult" > 3432< / td > < td class = "benchmarkresult" > 11893< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L2006" > replace bb to -- in lstringa< 8>|64< / a > < span class = "tooltiptext code" > template< size_t N, size_t Long>
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void ReplaceAllEqualSimString(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa--baaaaaaaa----aaaaabaaaaaaaaaaaaaaaaaaaaa--a" ;
lstringa< 2048> big_source{Long, source}, big_sample{Long, sample};
for (auto _: state) {
lstringa< N> result = big_source;
result.replace(" bb" , " --" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 99.6< / td > < td class = "benchmarkresult" > 93.3< / td > < td class = "benchmarkresult" > 185< / td > < td class = "benchmarkresult" > 184< / td > < td class = "benchmarkresult" > 439< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L2006" > replace bb to -- in lstringa< 8>|256< / a > < span class = "tooltiptext code" > template< size_t N, size_t Long>
2025-04-05 14:21:11 +00:00
void ReplaceAllEqualSimString(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa--baaaaaaaa----aaaaabaaaaaaaaaaaaaaaaaaaaa--a" ;
lstringa< 2048> big_source{Long, source}, big_sample{Long, sample};
for (auto _: state) {
lstringa< N> result = big_source;
result.replace(" bb" , " --" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 289< / td > < td class = "benchmarkresult" > 284< / td > < td class = "benchmarkresult" > 423< / td > < td class = "benchmarkresult" > 441< / td > < td class = "benchmarkresult" > 1355< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L2006" > replace bb to -- in lstringa< 8>|512< / a > < span class = "tooltiptext code" > template< size_t N, size_t Long>
2025-04-05 14:21:11 +00:00
void ReplaceAllEqualSimString(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa--baaaaaaaa----aaaaabaaaaaaaaaaaaaaaaaaaaa--a" ;
lstringa< 2048> big_source{Long, source}, big_sample{Long, sample};
for (auto _: state) {
lstringa< N> result = big_source;
result.replace(" bb" , " --" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 523< / td > < td class = "benchmarkresult" > 517< / td > < td class = "benchmarkresult" > 728< / td > < td class = "benchmarkresult" > 773< / td > < td class = "benchmarkresult" > 2540< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L2006" > replace bb to -- in lstringa< 8>|1024< / a > < span class = "tooltiptext code" > template< size_t N, size_t Long>
2025-04-05 14:21:11 +00:00
void ReplaceAllEqualSimString(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa--baaaaaaaa----aaaaabaaaaaaaaaaaaaaaaaaaaa--a" ;
lstringa< 2048> big_source{Long, source}, big_sample{Long, sample};
for (auto _: state) {
lstringa< N> result = big_source;
result.replace(" bb" , " --" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1058< / td > < td class = "benchmarkresult" > 1029< / td > < td class = "benchmarkresult" > 1403< / td > < td class = "benchmarkresult" > 1438< / td > < td class = "benchmarkresult" > 4650< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L2006" > replace bb to -- in lstringa< 8>|2048< / a > < span class = "tooltiptext code" > template< size_t N, size_t Long>
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void ReplaceAllEqualSimString(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa--baaaaaaaa----aaaaabaaaaaaaaaaaaaaaaaaaaa--a" ;
lstringa< 2048> big_source{Long, source}, big_sample{Long, sample};
for (auto _: state) {
lstringa< N> result = big_source;
result.replace(" bb" , " --" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 2093< / td > < td class = "benchmarkresult" > 2035< / td > < td class = "benchmarkresult" > 2686< / td > < td class = "benchmarkresult" > 2797< / td > < td class = "benchmarkresult" > 9148< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L2028" > replace bb to -- by init stringa|64< / a > < span class = "tooltiptext code" > template< size_t Count>
2025-04-05 14:21:11 +00:00
void ReplaceAllEqualSimStringExpr(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa--baaaaaaaa----aaaaabaaaaaaaaaaaaaaaaaaaaa--a" ;
ssa pattern = " bb" ;
ssa repl = " --" ;
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lstringa< 2048> big_source{Count, source}, big_sample{Count, sample};
for (auto _: state) {
stringa result = e_repl(big_source.to_str(), " bb" , " --" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(pattern);
benchmark::DoNotOptimize(repl);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 74.4< / td > < td class = "benchmarkresult" > 83.5< / td > < td class = "benchmarkresult" > 151< / td > < td class = "benchmarkresult" > 165< / td > < td class = "benchmarkresult" > 309< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L2028" > replace bb to -- by init stringa|256< / a > < span class = "tooltiptext code" > template< size_t Count>
2025-04-05 14:21:11 +00:00
void ReplaceAllEqualSimStringExpr(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa--baaaaaaaa----aaaaabaaaaaaaaaaaaaaaaaaaaa--a" ;
ssa pattern = " bb" ;
ssa repl = " --" ;
2025-11-26 19:15:50 +00:00
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lstringa< 2048> big_source{Count, source}, big_sample{Count, sample};
for (auto _: state) {
stringa result = e_repl(big_source.to_str(), " bb" , " --" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(pattern);
benchmark::DoNotOptimize(repl);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 238< / td > < td class = "benchmarkresult" > 263< / td > < td class = "benchmarkresult" > 320< / td > < td class = "benchmarkresult" > 371< / td > < td class = "benchmarkresult" > 967< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L2028" > replace bb to -- by init stringa|512< / a > < span class = "tooltiptext code" > template< size_t Count>
2025-04-05 14:21:11 +00:00
void ReplaceAllEqualSimStringExpr(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa--baaaaaaaa----aaaaabaaaaaaaaaaaaaaaaaaaaa--a" ;
ssa pattern = " bb" ;
ssa repl = " --" ;
2025-11-26 19:15:50 +00:00
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lstringa< 2048> big_source{Count, source}, big_sample{Count, sample};
for (auto _: state) {
stringa result = e_repl(big_source.to_str(), " bb" , " --" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(pattern);
benchmark::DoNotOptimize(repl);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 420< / td > < td class = "benchmarkresult" > 516< / td > < td class = "benchmarkresult" > 523< / td > < td class = "benchmarkresult" > 613< / td > < td class = "benchmarkresult" > 1774< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L2028" > replace bb to -- by init stringa|1024< / a > < span class = "tooltiptext code" > template< size_t Count>
2025-04-05 14:21:11 +00:00
void ReplaceAllEqualSimStringExpr(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa--baaaaaaaa----aaaaabaaaaaaaaaaaaaaaaaaaaa--a" ;
ssa pattern = " bb" ;
ssa repl = " --" ;
2025-11-26 19:15:50 +00:00
2025-04-05 14:21:11 +00:00
lstringa< 2048> big_source{Count, source}, big_sample{Count, sample};
for (auto _: state) {
stringa result = e_repl(big_source.to_str(), " bb" , " --" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(pattern);
benchmark::DoNotOptimize(repl);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 869< / td > < td class = "benchmarkresult" > 999< / td > < td class = "benchmarkresult" > 978< / td > < td class = "benchmarkresult" > 1103< / td > < td class = "benchmarkresult" > 3375< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L2028" > replace bb to -- by init stringa|2048< / a > < span class = "tooltiptext code" > template< size_t Count>
2025-04-05 14:21:11 +00:00
void ReplaceAllEqualSimStringExpr(benchmark::State& state) {
ssa source = " aaaaaaaaaaaaaaaaaaabbbaaaaaaaabbbbaaaaabaaaaaaaaaaaaaaaaaaaaabba" ;
ssa sample = " aaaaaaaaaaaaaaaaaaa--baaaaaaaa----aaaaabaaaaaaaaaaaaaaaaaaaaa--a" ;
ssa pattern = " bb" ;
ssa repl = " --" ;
2025-11-26 19:15:50 +00:00
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lstringa< 2048> big_source{Count, source}, big_sample{Count, sample};
for (auto _: state) {
stringa result = e_repl(big_source.to_str(), " bb" , " --" );
#ifdef CHECK_RESULT
if (result.to_str() != big_sample) {
std::cout < < result.length() < < " : " < < result < < " \n\n" < < big_sample.length() < < " : " < < big_sample < < " \n\n" ;
state.SkipWithError(" error in replace" );
break;
}
#endif
benchmark::DoNotOptimize(result);
benchmark::DoNotOptimize(source);
benchmark::DoNotOptimize(pattern);
benchmark::DoNotOptimize(repl);
}
2026-02-14 10:09:54 +00:00
}< / span > < / span > < / td > < td > < / td > < td class = "benchmarkresult" > 1707< / td > < td class = "benchmarkresult" > 1966< / td > < td class = "benchmarkresult" > 1763< / td > < td class = "benchmarkresult" > 2080< / td > < td class = "benchmarkresult" > 6646< / td > < / tr >
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' R e p l a c e A l l S t r T o S a m e S i z e ' ] = { i d : ' b s 2 9 ' , t e s t s : [
{name:'replace bb to -- in std::string|64',data:[131,113,186,200,556]},
{name:'replace bb to -- in std::string|256',data:[367,360,464,527,1773]},
{name:'replace bb to -- in std::string|512',data:[722,729,843,925,3125]},
{name:'replace bb to -- in std::string|1024',data:[1429,1303,1576,1849,6361]},
{name:'replace bb to -- in std::string|2048',data:[2801,2642,3142,3432,11893]},
{name:'replace bb to -- in lstringa< 8 > |64',data:[99.6,93.3,185,184,439]},
{name:'replace bb to -- in lstringa< 8 > |256',data:[289,284,423,441,1355]},
{name:'replace bb to -- in lstringa< 8 > |512',data:[523,517,728,773,2540]},
{name:'replace bb to -- in lstringa< 8 > |1024',data:[1058,1029,1403,1438,4650]},
{name:'replace bb to -- in lstringa< 8 > |2048',data:[2093,2035,2686,2797,9148]},
{name:'replace bb to -- by init stringa|64',data:[74.4,83.5,151,165,309]},
{name:'replace bb to -- by init stringa|256',data:[238,263,320,371,967]},
{name:'replace bb to -- by init stringa|512',data:[420,516,523,613,1774]},
{name:'replace bb to -- by init stringa|1024',data:[869,999,978,1103,3375]},
{name:'replace bb to -- by init stringa|2048',data:[1707,1966,1763,2080,6646]}
2025-04-05 14:21:11 +00:00
]}< / script >
2026-02-14 10:09:54 +00:00
< div class = "benchset" id = "bs30" > < h4 > < a id = "bs8410196985047277720" href = "#bs8410196985047277720" > #< / a > Hash Map insert and find< / h4 >
2026-02-08 11:17:03 +00:00
< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
2026-02-14 10:09:54 +00:00
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L2125" > hashStrMapA< size_t> emplace & find stringa;< / a > < span class = "tooltiptext code" > void HashMapSimStr(benchmark::State& state) {
2025-04-05 14:21:11 +00:00
for (auto _: state) {
hashStrMapA< size_t> store;
for (size_t idx = 0; idx < bs_sim.size(); idx++) {
store.try_emplace(bs_sim[idx], idx);
}
#ifdef CHECK_RESULT
if (store.size() != bs_sim.size()) {
state.SkipWithError(" bad inserts" );
}
#endif
for (size_t idx = 0; idx < bs_sim.size(); idx++) {
auto find = store.find(bs_sim[idx]);
size_t res = find->second;
#ifdef CHECK_RESULT
if (res != idx) {
state.SkipWithError(" bad find" );
}
#endif
benchmark::DoNotOptimize(res);
}
}
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Вставляем в hashStrMapA 10000 stringa длиной от 30 до 50
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символов, а
We insert 10,000 strings of length from 30 to 50 characters into
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hashStrMapA, and then search for them in it.< / span > < / span > < / td > < td class = "benchmarkresult" > 3519614< / td > < td class = "benchmarkresult" > 3793699< / td > < td class = "benchmarkresult" > 3922015< / td > < td class = "benchmarkresult" > 4404870< / td > < td class = "benchmarkresult" > 5122075< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L2149" > std::unordered_map< std::string, size_t> emplace & find std::string;< / a > < span class = "tooltiptext code" > void HashMapStdStr(benchmark::State& state) {
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for (auto _: state) {
std::unordered_map< std::string, size_t> store;
for (size_t idx = 0; idx < bs_std.size(); idx++) {
store.try_emplace(bs_std[idx], idx);
}
#ifdef CHECK_RESULT
if (store.size() != bs_std.size()) {
state.SkipWithError(" bad inserts" );
}
#endif
for (size_t idx = 0; idx < bs_std.size(); idx++) {
auto find = store.find(bs_std[idx]);
size_t res = find->second;
#ifdef CHECK_RESULT
if (res != idx) {
state.SkipWithError(" bad find" );
}
#endif
benchmark::DoNotOptimize(res);
}
}
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}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Т о
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Same thing with std::string and std::unordered_map< / span > < / span > < / td > < td class = "benchmarkresult" > 3429563< / td > < td class = "benchmarkresult" > 3632923< / td > < td class = "benchmarkresult" > 5584695< / td > < td class = "benchmarkresult" > 5721296< / td > < td class = "benchmarkresult" > 6141653< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L2173" > hashStrMapA< size_t> emplace & find ssa;< / a > < span class = "tooltiptext code" > void HashMapSimSsa(benchmark::State& state) {
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for (auto _: state) {
hashStrMapA< size_t> store;
for (size_t idx = 0; idx < bs_sim.size(); idx++) {
store.emplace(bs_sim[idx], idx);
}
#ifdef CHECK_RESULT
if (store.size() != bs_sim.size()) {
state.SkipWithError(" bad inserts" );
}
#endif
for (size_t idx = 0; idx < bs_sim.size(); idx++) {
ssa key = bs_sim[idx];
auto find = store.find(key);
size_t res = find->second;
#ifdef CHECK_RESULT
if (res != idx) {
state.SkipWithError(" bad find" );
}
#endif
benchmark::DoNotOptimize(res);
}
}
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}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Теперь вставляем stringa, а
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Now we insert stringa and search for ssa< / span > < / span > < / td > < td class = "benchmarkresult" > 3526598< / td > < td class = "benchmarkresult" > 3697109< / td > < td class = "benchmarkresult" > 3523219< / td > < td class = "benchmarkresult" > 3899002< / td > < td class = "benchmarkresult" > 5107848< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L2198" > std::unordered_map< std::string, size_t> emplace & find std::string_view;< / a > < span class = "tooltiptext code" > void HashMapStdStrView(benchmark::State& state) {
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for (auto _: state) {
std::unordered_map< std::string, size_t> store;
for (size_t idx = 0; idx < bs_std.size(); idx++) {
store.emplace(bs_std[idx], idx);
}
#ifdef CHECK_RESULT
if (store.size() != bs_std.size()) {
state.SkipWithError(" bad inserts" );
}
#endif
for (size_t idx = 0; idx < bs_std.size(); idx++) {
std::string_view key = bs_std[idx];
auto find = store.find(std::string{key});
size_t res = find->second;
#ifdef CHECK_RESULT
if (res != idx) {
state.SkipWithError(" bad find" );
}
#endif
benchmark::DoNotOptimize(res);
}
}
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}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Вставляем std::string, а
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We insert std::string and look for std::string_view< / span > < / span > < / td > < td class = "benchmarkresult" > 4067399< / td > < td class = "benchmarkresult" > 3939262< / td > < td class = "benchmarkresult" > 6362266< / td > < td class = "benchmarkresult" > 6299827< / td > < td class = "benchmarkresult" > 7187813< / td > < / tr >
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' H a s h M a p i n s e r t a n d f i n d ' ] = { i d : ' b s 3 0 ' , t e s t s : [
{name:'hashStrMapA< size_t > emplace & find stringa;',data:[3519614,3793699,3922015,4404870,5122075]},
{name:'std::unordered_map< std::string , size_t > emplace & find std::string;',data:[3429563,3632923,5584695,5721296,6141653]},
{name:'hashStrMapA< size_t > emplace & find ssa;',data:[3526598,3697109,3523219,3899002,5107848]},
{name:'std::unordered_map< std::string , size_t > emplace & find std::string_view;',data:[4067399,3939262,6362266,6299827,7187813]}
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]}< / script >
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< div class = "benchset" id = "bs31" > < h4 > < a id = "bs131384792586914680410" href = "#bs131384792586914680410" > #< / a > Build Full Func Name< / h4 >
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< table > < thead > < tr > < th > Benchmark name< / th > < th width = "5%" > Comment< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), Clang-21< / th > < th width = "8%" > Xeon E5-2682 v4, Ubuntu 22 (WSL), GCC-13< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, Clang-19< / th > < th width = "8%" > Xeon E5-2682 v4, Windows 10, MSVC-19< / th > < th width = "8%" > Xeon E5-2682 v4, WASM Chrome 143, Clang-21< / th > < / tr > < / thead > < tbody >
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< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L2408" > Build func full name std::string;< / a > < span class = "tooltiptext code" > std::string build_full_name_std() const {
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std::string str{has_ret_type_resolver ? " any" sv : type_names_sv[(unsigned)ret_type]};
str += " " ;
str += std_name;
str += " (" ;
bool add_comma = false;
for (const auto& param : params) {
if (add_comma) {
str += " , " ;
}
if (param.optional) {
str += " [" ;
}
param.allowed_types.to_stdstr(str);
if (param.optional) {
str += " ]" ;
}
add_comma = true;
}
if (unlim_params) {
if (add_comma) {
str += " , " ;
}
str += " ..." ;
}
str += " )" ;
//std::cout < < " Len=" < < str.length() < < " , Cap=" < < str.capacity() < < " \n" ;
return str;
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Обыденная задача, подобные часто могут встретится в работе:
По неким данным сгенерировать текст. В
о с
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возвращаемого значения. Алгоритм на std::string.
A common task, similar to this one, can often be encountered in work:
Generate text from given data. In this case, using data
on certain functions, generate their full names with parameter types and
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return values. The algorithm uses std::string.< / span > < / span > < / td > < td class = "benchmarkresult" > 660< / td > < td class = "benchmarkresult" > 812< / td > < td class = "benchmarkresult" > 1505< / td > < td class = "benchmarkresult" > 1577< / td > < td class = "benchmarkresult" > 5362< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L2440" > Build func full name std::string 1;< / a > < span class = "tooltiptext code" > std::string build_full_name_std1() const {
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std::string str{has_ret_type_resolver ? " any" sv : type_names_sv[(unsigned)ret_type]};
str += " " + std_name + " (" ;
bool add_comma = false;
for (const auto& param : params) {
if (add_comma) {
str += " , " ;
}
if (param.optional) {
str += " [" ;
}
param.allowed_types.to_stdstr(str);
if (param.optional) {
str += " ]" ;
}
add_comma = true;
}
if (unlim_params) {
if (add_comma) {
str += " , " ;
}
str += " ..." ;
}
str += " )" ;
//std::cout < < " Len=" < < str.length() < < " , Cap=" < < str.capacity() < < " \n" ;
return str;
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Почти тот же алгоритм, но несколько последовательных
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+= к строке заменены на одно += + + +.
Almost the same algorithm, but several consecutive
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+= to a string are replaced with a single += + + +.< / span > < / span > < / td > < td class = "benchmarkresult" > 758< / td > < td class = "benchmarkresult" > 935< / td > < td class = "benchmarkresult" > 1501< / td > < td class = "benchmarkresult" > 1622< / td > < td class = "benchmarkresult" > 6029< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L2470" > Build func full name std::stream;< / a > < span class = "tooltiptext code" > std::string build_full_name_stream() const {
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std::ostringstream str;
if (has_ret_type_resolver) {
str < < " any" ;
} else {
str < < type_names_sv[(unsigned)ret_type];
}
str < < " " < < std_name < < " (" ;
bool add_comma = false;
for (const auto& param : params) {
if (add_comma) {
str < < " , " ;
}
if (param.optional) {
str < < " [" ;
}
param.allowed_types.to_stream(str);
if (param.optional) {
str < < " ]" ;
}
add_comma = true;
}
if (unlim_params) {
if (add_comma) {
str < < " , " ;
}
str < < " ..." ;
}
str < < " )" ;
return str.str();
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}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Строим имя функции через std::ostringstream и < <
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We construct the function name through std::ostringstream and < < < / span > < / span > < / td > < td class = "benchmarkresult" > 2557< / td > < td class = "benchmarkresult" > 2527< / td > < td class = "benchmarkresult" > 8093< / td > < td class = "benchmarkresult" > 9579< / td > < td class = "benchmarkresult" > 25412< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L2381" > Build func full name stringa;< / a > < span class = "tooltiptext code" > stringa build_full_name() const {
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lstringa< 512> str = e_choice(has_ret_type_resolver, " any" , type_names[(unsigned)ret_type]) + " " + name + " (" ;
bool add_comma = false;
for (const auto& param : params) {
str += e_if(add_comma, " , " ) + e_if(param.optional, " [" );
param.allowed_types.to_simstr(str);
if (param.optional) {
str += " ]" ;
}
add_comma = true;
}
return str + e_if(unlim_params, e_if(add_comma, " , " ) + " ..." ) + " )" ;
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Реализация на simstr строках и строковых выражениях.
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Инфа о
Implementation using simstr strings and string expressions.
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Parameter information is appended to the current line.< / span > < / span > < / td > < td class = "benchmarkresult" > 494< / td > < td class = "benchmarkresult" > 446< / td > < td class = "benchmarkresult" > 747< / td > < td class = "benchmarkresult" > 857< / td > < td class = "benchmarkresult" > 2926< / td > < / tr >
< tr > < td class = "benchmarkname" > < span class = "tooltip" > < a target = "blank" href = "https://github.com/orefkov/simstr/blob/rel1.6.7/bench/bench_str.cpp#L2396" > Build func full name stringa 1;< / a > < span class = "tooltiptext code" > stringa build_full_name1() const {
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lstringa< 512> str = e_choice(has_ret_type_resolver, " any" , type_names[(unsigned)ret_type]) + " " + name + " (" ;
bool add_comma = false;
for (const auto& param : params) {
str += e_if(add_comma, " , " ) + e_if(param.optional, " [" ) + param.allowed_types.get_simstr() + e_if(param.optional, " ]" );
add_comma = true;
}
return str + e_if(unlim_params, e_if(add_comma, " , " ) + " ..." ) + " )" ;
}< / span > < / span > < / td > < td > < span class = "tooltip info" > >> < span class = "tooltiptext" > Реализация на simstr строках и строковых выражениях.
Инфа о а
разом добавляется в текущую строку. Позволяет операции в цикле
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записать в одну строку, но чуть проигрывает по времени выполнения.
Implementation using simstr strings and string expressions.
Parameter information is added to a temporary string, and then
all at once to the current string. This allows loop operations
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to be written in a single string, but is slightly slower in execution time.< / span > < / span > < / td > < td class = "benchmarkresult" > 607< / td > < td class = "benchmarkresult" > 624< / td > < td class = "benchmarkresult" > 898< / td > < td class = "benchmarkresult" > 1025< / td > < td class = "benchmarkresult" > 3417< / td > < / tr >
< / tbody > < / table > < / div > < script > b e n c h _ s e t s [ ' B u i l d F u l l F u n c N a m e ' ] = { i d : ' b s 3 1 ' , t e s t s : [
{name:'Build func full name std::string;',data:[660,812,1505,1577,5362]},
{name:'Build func full name std::string 1;',data:[758,935,1501,1622,6029]},
{name:'Build func full name std::stream;',data:[2557,2527,8093,9579,25412]},
{name:'Build func full name stringa;',data:[494,446,747,857,2926]},
{name:'Build func full name stringa 1;',data:[607,624,898,1025,3417]}
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]}< / script > < / body > < / html >
