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f4307ef59d
Uses a memory pool for parser struct and format []byte Uses a new go 1.20 feature to avoid allocations for []byte to string conversions in allowable cases. go 1.20 also fixes a go bug for parsing fractional sec after a comma, so we can eliminate a workaround. The remaining allocations are mostly unavoidable (e.g., time.Parse constructing a FixedZone location or part to strings.ToLower). Results show an 89% reduction in allocated bytes for the big benchmark cases, and for some formats an allocation can be avoided entirely. There is also a resulting 26% speedup in ns/op. Details: BEFORE: cpu: 12th Gen Intel(R) Core(TM) i7-1255U BenchmarkShotgunParse-12 19448 B/op 474 allocs/op BenchmarkParseAny-12 4736 B/op 42 allocs/op BenchmarkBigShotgunParse-12 1075049 B/op 24106 allocs/op BenchmarkBigParseAny-12 241422 B/op 2916 allocs/op BenchmarkBigParseIn-12 244195 B/op 2984 allocs/op BenchmarkBigParseRetryAmbiguous-12 260751 B/op 3715 allocs/op BenchmarkShotgunParseErrors-12 67080 B/op 1679 allocs/op BenchmarkParseAnyErrors-12 15903 B/op 200 allocs/op AFTER: BenchmarkShotgunParse-12 19448 B/op 474 allocs/op BenchmarkParseAny-12 48 B/op 2 allocs/op BenchmarkBigShotgunParse-12 1075049 B/op 24106 allocs/op BenchmarkBigParseAny-12 25394 B/op 824 allocs/op BenchmarkBigParseIn-12 28165 B/op 892 allocs/op BenchmarkBigParseRetryAmbiguous-12 37880 B/op 1502 allocs/op BenchmarkShotgunParseErrors-12 67080 B/op 1679 allocs/op BenchmarkParseAnyErrors-12 3851 B/op 117 allocs/op
17 lines
430 B
Modula-2
17 lines
430 B
Modula-2
module github.com/araddon/dateparse
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go 1.20
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require (
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github.com/scylladb/termtables v0.0.0-20191203121021-c4c0b6d42ff4
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github.com/stretchr/testify v1.7.0
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)
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require (
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github.com/davecgh/go-spew v1.1.0 // indirect
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github.com/mattn/go-runewidth v0.0.10 // indirect
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github.com/pmezard/go-difflib v1.0.0 // indirect
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github.com/rivo/uniseg v0.1.0 // indirect
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gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c // indirect
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)
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