This is a dojo to experiment with and learn from Go.
Here I might add little code snippets as I experiment with things.
Run benchmarks with make bench. These benchmarks will run a series of tests to answer the question "What is the fastest way to do X in Go?"
Last update: Nov 9th, 2023
Go version: 1.21.4
Running tests...
go test -run=Test. -race ./bench
ok github.com/stefanovazzocell/GoDojo/bench 1.008s
Running benchmarks...
go test -run=Bench -bench=. -benchmem ./bench
goos: linux
goarch: amd64
pkg: github.com/stefanovazzocell/GoDojo/bench
cpu: Intel(R) Core(TM) i7-10750H CPU @ 2.60GHz
BenchmarkControlFlowSimple/switch-12 1000000000 0.4971 ns/op 0 B/op 0 allocs/op
BenchmarkControlFlowSimple/if-12 1000000000 0.5059 ns/op 0 B/op 0 allocs/op
BenchmarkControlFlowSimple/ifElse-12 1000000000 0.5087 ns/op 0 B/op 0 allocs/op
BenchmarkControlFlowComplex/switch-12 1000000000 0.9779 ns/op 0 B/op 0 allocs/op
BenchmarkControlFlowComplex/if-12 1000000000 0.7684 ns/op 0 B/op 0 allocs/op
BenchmarkControlFlowComplex/ifElse-12 1000000000 0.7819 ns/op 0 B/op 0 allocs/op
BenchmarkSliceLoopValue/rangeKey-12 2679 433583 ns/op 0 B/op 0 allocs/op
BenchmarkSliceLoopValue/rangeVal-12 2736 419979 ns/op 0 B/op 0 allocs/op
BenchmarkSliceLoopValue/len-12 2697 439555 ns/op 0 B/op 0 allocs/op
BenchmarkSliceLoopValue/lenOptimizedA-12 2641 439027 ns/op 0 B/op 0 allocs/op
BenchmarkSliceLoopValue/lenOptimizedB-12 2632 433556 ns/op 0 B/op 0 allocs/op
BenchmarkSliceLoopCount/rangeKey-12 1012 1159858 ns/op 0 B/op 0 allocs/op
BenchmarkSliceLoopCount/rangeVal-12 1017 1130863 ns/op 0 B/op 0 allocs/op
BenchmarkSliceLoopCount/rangeBlank-12 1017 1173158 ns/op 0 B/op 0 allocs/op
BenchmarkSliceLoopCount/len-12 1027 1191256 ns/op 0 B/op 0 allocs/op
BenchmarkSliceLoopCount/lenOptimizedA-12 1010 1152723 ns/op 0 B/op 0 allocs/op
BenchmarkSliceLoopCount/lenOptimizedB-12 1011 1145234 ns/op 0 B/op 0 allocs/op
BenchmarkIntToString/Sprintf-12 16380276 72.35 ns/op 16 B/op 1 allocs/op
BenchmarkIntToString/strconvItoa-12 53153370 23.26 ns/op 7 B/op 0 allocs/op
BenchmarkIntToString/strconvFormatInt-12 52245962 23.38 ns/op 7 B/op 0 allocs/op
BenchmarkLocks/Mutex/Sequential-12 99097232 11.86 ns/op 0 B/op 0 allocs/op
BenchmarkLocks/Mutex/Parallel-12 15280332 70.65 ns/op 0 B/op 0 allocs/op
BenchmarkLocks/RWMutex/Sequential-12 51812480 20.80 ns/op 0 B/op 0 allocs/op
BenchmarkLocks/RWMutex/Parallel-12 17000750 64.88 ns/op 0 B/op 0 allocs/op
BenchmarkLocks/RWMutexRead/Sequential-12 100018202 12.04 ns/op 0 B/op 0 allocs/op
BenchmarkLocks/RWMutexRead/Parallel-12 27283442 42.41 ns/op 0 B/op 0 allocs/op
BenchmarkLocks/Bool/Sequential-12 100000000 10.60 ns/op 0 B/op 0 allocs/op
BenchmarkLocks/Bool/Parallel-12 4004400 301.6 ns/op 0 B/op 0 allocs/op
BenchmarkLocks/int32/Sequential-12 100000000 11.80 ns/op 0 B/op 0 allocs/op
BenchmarkLocks/int32/Parallel-12 4263741 277.8 ns/op 0 B/op 0 allocs/op
BenchmarkLocks/int64/Sequential-12 97288614 11.63 ns/op 0 B/op 0 allocs/op
BenchmarkLocks/int64/Parallel-12 4169286 283.2 ns/op 0 B/op 0 allocs/op
BenchmarkLocks/Uint32/Sequential-12 100000000 11.44 ns/op 0 B/op 0 allocs/op
BenchmarkLocks/Uint32/Parallel-12 4255006 290.5 ns/op 0 B/op 0 allocs/op
BenchmarkLocks/Uint64/Sequential-12 99919347 11.78 ns/op 0 B/op 0 allocs/op
BenchmarkLocks/Uint64/Parallel-12 4284783 278.0 ns/op 0 B/op 0 allocs/op
BenchmarkLocksNoWork/Mutex/Sequential-12 126421218 9.333 ns/op 0 B/op 0 allocs/op
BenchmarkLocksNoWork/Mutex/Parallel-12 14762418 75.11 ns/op 0 B/op 0 allocs/op
BenchmarkLocksNoWork/RWMutex/Sequential-12 52618564 19.21 ns/op 0 B/op 0 allocs/op
BenchmarkLocksNoWork/RWMutex/Parallel-12 17022159 64.93 ns/op 0 B/op 0 allocs/op
BenchmarkLocksNoWork/RWMutexRead/Sequential-12 126744830 9.475 ns/op 0 B/op 0 allocs/op
BenchmarkLocksNoWork/RWMutexRead/Parallel-12 26613703 42.95 ns/op 0 B/op 0 allocs/op
BenchmarkLocksNoWork/Bool/Sequential-12 100000000 10.71 ns/op 0 B/op 0 allocs/op
BenchmarkLocksNoWork/Bool/Parallel-12 4691275 252.1 ns/op 0 B/op 0 allocs/op
BenchmarkLocksNoWork/int32/Sequential-12 139910595 8.462 ns/op 0 B/op 0 allocs/op
BenchmarkLocksNoWork/int32/Parallel-12 4082986 280.3 ns/op 0 B/op 0 allocs/op
BenchmarkLocksNoWork/int64/Sequential-12 129382972 9.244 ns/op 0 B/op 0 allocs/op
BenchmarkLocksNoWork/int64/Parallel-12 4405255 267.4 ns/op 0 B/op 0 allocs/op
BenchmarkLocksNoWork/Uint32/Sequential-12 143594055 8.466 ns/op 0 B/op 0 allocs/op
BenchmarkLocksNoWork/Uint32/Parallel-12 4424598 266.6 ns/op 0 B/op 0 allocs/op
BenchmarkLocksNoWork/Uint64/Sequential-12 127184974 9.443 ns/op 0 B/op 0 allocs/op
BenchmarkLocksNoWork/Uint64/Parallel-12 4443876 267.2 ns/op 0 B/op 0 allocs/op
BenchmarkStringCharLoop/len10/rangeKey-12 166610340 7.721 ns/op 0 B/op 0 allocs/op
BenchmarkStringCharLoop/len10/rangeVal-12 239890425 4.863 ns/op 0 B/op 0 allocs/op
BenchmarkStringCharLoop/len10/len-12 216733774 5.681 ns/op 0 B/op 0 allocs/op
BenchmarkStringCharLoop/len10/lenOptimizedA-12 207720427 5.519 ns/op 0 B/op 0 allocs/op
BenchmarkStringCharLoop/len10/lenOptimizedB-12 216538434 5.524 ns/op 0 B/op 0 allocs/op
BenchmarkStringCharLoop/len10/stringsReader-12 125230806 9.600 ns/op 0 B/op 0 allocs/op
BenchmarkStringCharLoop/len1000000/rangeKey-12 656 1923256 ns/op 0 B/op 0 allocs/op
BenchmarkStringCharLoop/len1000000/rangeVal-12 716 1514781 ns/op 0 B/op 0 allocs/op
BenchmarkStringCharLoop/len1000000/len-12 5262 220144 ns/op 0 B/op 0 allocs/op
BenchmarkStringCharLoop/len1000000/lenOptimizedA-12 5218 220848 ns/op 0 B/op 0 allocs/op
BenchmarkStringCharLoop/len1000000/lenOptimizedB-12 5227 220434 ns/op 0 B/op 0 allocs/op
BenchmarkStringCharLoop/len1000000/stringsReader-12 1202 1048560 ns/op 0 B/op 0 allocs/op
BenchmarkRandom64Bytes/random64ArrayExpanded-12 1000000 1094 ns/op 0 B/op 0 allocs/op
BenchmarkRandom64Bytes/random64SliceBuffer-12 991952 1125 ns/op 64 B/op 1 allocs/op
BenchmarkRandom64Bytes/randomSlice64Make-12 1200784 995.0 ns/op 64 B/op 1 allocs/op
BenchmarkRandom64Bytes/random64SliceAppend-12 1000000 1129 ns/op 64 B/op 1 allocs/op
BenchmarkRandom64Bytes/random64SliceReader-12 15218361 75.91 ns/op 0 B/op 0 allocs/op
BenchmarkRandom64Bytes/random64Array-12 1242116 1029 ns/op 0 B/op 0 allocs/op
BenchmarkSliceAppendOne/simple-12 18634490 58.34 ns/op 96 B/op 1 allocs/op
BenchmarkSliceAppendOne/appendEachWithHint-12 413496826 2.980 ns/op 0 B/op 0 allocs/op
BenchmarkSliceAppendOne/appendSliceWithHint-12 159381884 7.497 ns/op 0 B/op 0 allocs/op
BenchmarkSliceAppendOne/appendTogetherWithHint-12 1000000000 0.2230 ns/op 0 B/op 0 allocs/op
BenchmarkSliceAppendOne/preSized-12 1000000000 0.2260 ns/op 0 B/op 0 allocs/op
BenchmarkSliceAppendOne/preSizedAll-12 1000000000 0.2256 ns/op 0 B/op 0 allocs/op
BenchmarkStrHash-12 474674284 2.335 ns/op 0 B/op 0 allocs/op
BenchmarkHashFnv-12 128569242 8.909 ns/op 0 B/op 0 allocs/op
BenchmarkStringBufferReader/bufio.Reader-12 813409 1469 ns/op 5768 B/op 8 allocs/op
BenchmarkStringBufferReader/native-12 53755509 20.22 ns/op 0 B/op 0 allocs/op
BenchmarkStringStartWithShort/stringsHasPrefix-12 138812216 8.650 ns/op 0 B/op 0 allocs/op
BenchmarkStringStartWithShort/LoopStartsWith-12 138421202 8.522 ns/op 0 B/op 0 allocs/op
BenchmarkStringStartWithLong/stringsHasPrefix-12 189162297 5.795 ns/op 0 B/op 0 allocs/op
BenchmarkStringStartWithLong/LoopStartsWith-12 14816086 82.41 ns/op 0 B/op 0 allocs/op
BenchmarkTextConcatSmall/Sprint-12 14657605 76.89 ns/op 16 B/op 1 allocs/op
BenchmarkTextConcatSmall/Plus-12 1000000000 0.2221 ns/op 0 B/op 0 allocs/op
BenchmarkTextConcatSmall/Builder-12 27704907 40.50 ns/op 24 B/op 2 allocs/op
BenchmarkTextConcatSmall/Join-12 29348859 38.18 ns/op 16 B/op 1 allocs/op
BenchmarkTextConcatLarge/Plus-12 122786 9679 ns/op 31728 B/op 99 allocs/op
BenchmarkTextConcatLarge/Builder-12 1797486 645.4 ns/op 1912 B/op 8 allocs/op
BenchmarkTextConcatLarge/BuilderPrealloc-12 4351908 270.0 ns/op 640 B/op 1 allocs/op
BenchmarkTextConcatLarge/Join-12 582578 1955 ns/op 4720 B/op 9 allocs/op
BenchmarkTextConcatLarge/JoinReserved-12 1494246 795.5 ns/op 640 B/op 1 allocs/op
BenchmarkTextConcatLarge/JoinPrealloc-12 1561329 760.4 ns/op 640 B/op 1 allocs/op
PASS
ok github.com/stefanovazzocell/GoDojo/bench 128.696s
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