timeafter.go

package main

import (
	"fmt"
	"time"
)

func main() {
	start := time.Now()

	fmt.Printf("%s \n", time.Since(start))
	fmt.Printf("%s \n", time.Since(start))
	fmt.Printf("%s \n", time.Since(start))
	fmt.Printf("%s \n", time.Since(start))
	fmt.Printf("%s \n", time.Since(start))

	<-time.After(10 * time.Millisecond)
	fmt.Printf("%s \n", time.Since(start))
	<-time.After(10 * time.Millisecond)
	fmt.Printf("%s \n", time.Since(start))
	<-time.After(10 * time.Millisecond)
	fmt.Printf("%s \n", time.Since(start))
	<-time.After(10 * time.Millisecond)
	fmt.Printf("%s \n", time.Since(start))
	<-time.After(10 * time.Millisecond)
	fmt.Printf("%s \n", time.Since(start))
}