Code in go to demonstrate blocking vs non blocking channel

blocking_vs_non_blocking_channel.go

package main

import (
	"fmt"
	"time"
)

func otherRoutine(channel chan int, n int) {
	for i := 0; i < n; i++ {
		time.Sleep(time.Second)
		channel <- i * 5
	}
}
func main() {
	channel := make(chan int)
	n := 30
	go otherRoutine(channel, n)
	for i := 0; i < n; i++ {
		select {
		case r := <-channel:
			fmt.Println(r)
		default:
			fmt.Println("test")
		}
	}
	for i := 0; i < n; i++ {
		r := <-channel
		println(r)
		println("test")
	}
	//time.Sleep(time.Second * 10)
}