Celebrating premature optimization

main.go

package main

import (
	"fmt"
	"time"
)

func main() {
	var intTrash int
	var byteTrash byte

	now := time.Now()
	for i := 0; i < 100000000; i++ {
		var num int
		for num = 0; num < 8; num++ {
			intTrash = num
		}
	}
	elapsed1 := time.Since(now)

	now = time.Now()
	for i := 0; i < 100000000; i++ {
		var num byte
		for num = 0; num < 8; num++ {
			byteTrash = num
		}
	}
	elapsed2 := time.Since(now)

	fmt.Println("Integers:", elapsed1)
	fmt.Println("Bytes:", elapsed2)
	fmt.Println(intTrash, byteTrash)
}

❯ go run main.go
Integers: 893.864892ms
Bytes: 612.049695ms
7 7