25 lines
461 B
Go
25 lines
461 B
Go
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package main
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import (
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"fmt"
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"testing"
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)
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var result string
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var buffer []byte = make([]byte, 33)
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func Concat(b *testing.B) {
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for i := 0; i < b.N; i++ {
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result = string(buffer) + string(buffer)
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}
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}
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func main() {
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b := testing.Benchmark(Concat)
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fmt.Println(b.AllocsPerOp()) // 3
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fmt.Println(b.AllocedBytesPerOp()) // 176
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// alocated 176 bytes = 48 (not 33) + 48 (not 33) + 80 (not 33 + 33 = 66)
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// waste = 15 + 15 + 14 = 44 bytes (25% waste)
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}
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