test chan

test-chan.go

package main

import (
	"fmt"
	"time"
)

func main() {

	ch := make(chan int, 1)

	go func() {
		inV := 1
		for {
			ch <- inV
			fmt.Println(time.Now(), "...in", inV)
			time.Sleep(1000 * time.Millisecond)
			inV++
		}
	}()

	var outV int
	for {
		outV = <-ch
		fmt.Println(time.Now(), "...out", outV)
		time.Sleep(4000 * time.Millisecond)
	}
}