Go Channel - Example

go_channel_ex.go

// Go channel example
package main

import (
	"fmt"
	"sync"
)

// send only function
func sendOnlyMessage(ch chan<- int, wg *sync.WaitGroup) {
	ch <- 42
	wg.Done()
}

func recieveOnlyMessage(ch <-chan int, wg *sync.WaitGroup) {
	fmt.Println(<-ch)
	wg.Done()
}

func main() {

	wg := &sync.WaitGroup{}
	ch := make(chan int) // channel default to 0 messages

	wg.Add(2)

	go sendOnlyMessage(ch, wg)

	go recieveOnlyMessage(ch, wg)

	wg.Wait()

}