memalloc_bench.go

package bench_test

import "testing"

func BenchmarkMemAllocOndemand(b *testing.B) {
    n := 10
    b.ResetTimer()
    for i := 0; i < b.N; i++ {
        s := make([]string, 0)
        for j := 0; j < n; j++ {
            s = append(s, "alice")
        }
    }
}

func BenchmarkMemAllocAllBeforeUsing(b *testing.B) {
    n := 10
    b.ResetTimer()
    for i := 0; i < b.N; i++ {
        s := make([]string, 0, n)
        for j := 0; j < n; j++ {
            s = append(s, "alice")
        }
    }
}