append

append_test.go

package slices

import (
	"testing"
)

var length = 10000

func BenchmarkAppend(b *testing.B) {
	for i := 0; i < b.N; i++ {
		Append()
	}
}

func BenchmarkAppendFixed(b *testing.B) {
	for i := 0; i < b.N; i++ {
		AppendFixed()
	}
}

func Append() {
	var b []int
	for i := 0; i < length; i++ {
		b = append(b, i)
	}
}
func AppendFixed() {
	b := make([]int, 0, length)

	for i := 0; i < length; i++ {
		b = append(b, i)
	}
}

bench.txt

PASS
BenchmarkAppend	    3000	    430755 ns/op
BenchmarkAppendFixed	   10000	    121799 ns/op
ok  	github.com/tarrsalah/misc/spec/slices	2.572s