Sorry, I temporarily switch to Go 1.3.
The result is constantly 0 0 1 for Go 1.15 when N > 2.
On Saturday, August 15, 2020 at 12:30:32 AM UTC-4, T L wrote:
>
>
> package main
>
> import "fmt"
> import "bytes"
> import "testing"
>
> const N = 0
> var name = bytes.Repeat([]byte{'x'}, N)
> var m = make(map[string]string, 10)
> var s string
>
> func f() {
> s = m[string(name)]
> }
>
> func g() {
> key := string(name)
> s = m[key]
> }
>
> func h() {
> m[string(name)] = "Golang"
> }
>
> func main() {
> fmt.Println(testing.AllocsPerRun(1, f)) // 0
> fmt.Println(testing.AllocsPerRun(1, g)) // 1
> fmt.Println(testing.AllocsPerRun(1, h)) // 1
> }
>
> /* The result:
>
> N f g H
> --- --- --- ---
> >=9 0 1 1
> 8,4,2,1,0 0 0 0
> 6,7 0 1 1
> 3,5 0 1 0
> */
>
> Some inaccuracies in testing.AllocsPerRun?
>
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