gistfile1.txt

package main

func main() {
	PopWithCopy()
}

func PopWithCopy() string {
	strs := []string{
		"AAAAAAAAAAA",
		"AAAAAAAAAAA",
		"AAAAAAAAAAA",
		"AAAAAAAAAAA",
		"AAAAAAAAAAA",
		"AAAAAAAAAAA",
		"AAAAAAAAAAA",
		"AAAAAAAAAAA",
		"AAAAAAAAAAA",
		"AAAAAAAAAAA",
	}
	p := strs[0]
	copy(strs, strs[1:])
	return p
}

func PopWithEqual() string {
	strs := []string{
		"AAAAAAAAAAA",
		"AAAAAAAAAAA",
		"AAAAAAAAAAA",
		"AAAAAAAAAAA",
		"AAAAAAAAAAA",
		"AAAAAAAAAAA",
		"AAAAAAAAAAA",
		"AAAAAAAAAAA",
		"AAAAAAAAAAA",
		"AAAAAAAAAAA",
	}
	p, strs := strs[0], strs[1:]
	return p
}

package main

import (
	"testing"
)

func Benchmark_NormalPop(b *testing.B) {
	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		PopWithCopy()
	}
}

func Benchmark_EqualPop(b *testing.B) {
	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		PopWithEqual()
	}
}