Int Conversion Benchmarks

int_conv_test.go

package main

import (
	"fmt"
	"strconv"
	"testing"
)

var (
	n = 12345
	s string
)

func BenchmarkFmt(b *testing.B) {
	for i := 0; i < b.N; i++ {
		s = fmt.Sprintf("%d", n)
	}
}

func BenchmarkStrconv(b *testing.B) {
	for i := 0; i < b.N; i++ {
		s = strconv.Itoa(n)
	}
}

/*
$ go test -bench=. -benchmem -v int_conv_test.go
testing: warning: no tests to run
PASS
BenchmarkFmt-8         	 5000000       	       251 ns/op       	      16 B/op  	       2 allocs/op
BenchmarkStrconv-8     	20000000       	        67.2 ns/op     	       5 B/op  	       1 allocs/op
ok     	command-line-arguments 	2.942s
*/