Go每日一题_129

package main

import (
    "fmt"
    "time"
)

func main() {
    ch := make(chan int, 1000)
    go func() {
        for i := 0; i < 10; i++ {
            ch <- i
        }
    }()
    go func() {
        for {
            a, ok := <-ch
            if !ok {
                fmt.Println("close")
                return
            }
            fmt.Println("a: ", a)
        }
    }()
    close(ch)
    fmt.Println("ok")
    time.Sleep(time.Second * 100)
}