Kaiwit Maneewong KMwich

## Barrier by using channel
package main

import (
	"fmt"
)

type callback func()

func pulseAll(amount int, pulse chan bool, success callback) {
	for i := 0; i < amount; i++ {
	package main

	import (
	"fmt"
	)

	type callback func()

	func pulseAll(amount int, pulse chan bool, success callback) {
	for i := 0; i < amount; i++ {