robert-zaremba/benchmark_len_test.go

## benchmark_len_test.go
package pkg

import "testing"

var a []int
var N = 200000000

func init() {
	l := 10000
	a = make([]int, l, l)
}

func BenchmarkLen1(b *testing.B) {
	x := 0
	for i := 0; i < N; i++ {
		x += len(a)
	}
	println(x)
}

func BenchmarkLen2(b *testing.B) {
	l := len(a)
	x := 0
	for i := 0; i < N; i++ {
		x += l
	}
	println(x)
}
	package pkg

	import "testing"

	var a []int
	var N = 200000000

	func init() {
	l := 10000
	a = make([]int, l, l)
	}

	func BenchmarkLen1(b *testing.B) {
	x := 0
	for i := 0; i < N; i++ {
	x += len(a)
	}
	println(x)
	}

	func BenchmarkLen2(b *testing.B) {
	l := len(a)
	x := 0
	for i := 0; i < N; i++ {
	x += l
	}
	println(x)
	}