Simple Gorotine test

goro_ex.go

package main

import (
        "fmt"
        "time"
        "rand"
        "runtime"
)

func main() {
        runtime.GOMAXPROCS(4)
        times := 26
        ch := make(chan bool)

        for i := 0; i < times; i++ {
                go func(x int) {
                        time.Sleep(rand.Int63n(4e9))
                        fmt.Printf("%c ", x+65)
                        ch <- true
                }(i)
        }

        for i := 0; i < times; i++ {
                <-ch
        }
}