Golang golang-wait (snippet)

Go programming example 'golang-wait'

golang-wait

Golang beginners example: golang-wait

package main

import (
    "fmt"
    "sync"
    "time"
)

func f(w *sync.WaitGroup, sec int) {
    fmt.Println("a")
    time.Sleep(time.Duration(sec) * time.Second)
    fmt.Println("b")
    w.Done()
}

func main() {
    fmt.Println("start")
    var w sync.WaitGroup
    w.Add(2)

    go func(w *sync.WaitGroup, sec int) {
        fmt.Println("c")
        <-time.After(time.Duration(sec) * time.Millisecond)
        fmt.Println("d")
        w.Done()
    }(&w, 2500)

    go f(&w, 4)

    w.Wait()

    time.Sleep(900000000 * time.Nanosecond)

    fmt.Println("finish")
}

Useful links

• Learn Go: https://golangr.com
• Download Go: https://golang.org