将原语转换为字符串或从字符串转换时,strconv速度比fmt快。
Bad | Good |
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for i := 0; i < b.N; i++ { s := fmt.Sprint(rand.Int()) } |
for i := 0; i < b.N; i++ { s := strconv.Itoa(rand.Int()) } |
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BenchmarkFmtSprint-4 143 ns/op 2 allocs/op |
BenchmarkStrconv-4 64.2 ns/op 1 allocs/op |