go 使用 goroutine channel 通信

packagemain

import (

    "fmt"

)

func Cnt(ch chan int) {

    ch <- 1

    fmt.Println("counting")

}

func main() {

    chs := make([]chan int, 20)

    for i := 0; i < 20; i++ {

        chs[i] = make(chan int)

        go Cnt(chs[i])

        fmt.Println("Count", i)

    }

    for i, ch := range chs {

        <-ch

        fmt.Println("counting", i)

    }

}

运行：

go run channel.go

结果：

Count 0

Count 1Count 2Count 3Count 4Count 5Count 6Count 7Count 8Count 9Count 10Count 11Count 12Count 13Count 14Count 15Count 16Count 17Count 18Count 19counting 0counting 1counting 2counting 3counting 4counting 5countingcounting 6counting 7counting 8countingcountingcountingcountingcountingcountingcounting 9counting 10counting 11countingcountingcountingcounting 12counting 13counting 14counting 15counting 16countingcountingcountingcounting 17counting 18countingcountingcountingcountingcountingcounting 19