benchmark.go

var letters = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")

func randSeq(n int) string {
	b := make([]rune, n)
	for i := range b {
		b[i] = letters[rand.Intn(len(letters))]
	}
	return string(b)
}

var lim = 4
func BenchmarkFor(b *testing.B) {
	rand.Seed(time.Now().UnixNano())
	mapperino := make(map[string][]string)
	for i := 0; i < lim; i++ {
		var ranString = randSeq(10)
		mapperino[ranString] = []string{ranString}
	}
	var output string
	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		for j := range mapperino {
			output = j + mapperino[j][0]
		}
	}
	b.Log(output)
}

func BenchmarkForExtra(b *testing.B) {
	rand.Seed(time.Now().UnixNano())
	mapperino := make(map[string][]string)
	for i := 0; i < lim; i++ {
		var ranString = randSeq(10)
		mapperino[ranString] = []string{ranString}
	}
	var output string
	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		for k, v := range mapperino {
			output = k + v[0]
		}
	}
	b.Log(output)
}