closed channel

Posted 2022-04-24 zhouj-happy

func Test_chanel(t *testing.T) 
    c := make(chan int, 1)

    go func() 
        time.Sleep(time.Second * 3)
        close(c)
    ()

    for 
        select 
        case i := <-c:
            log.Printf("chan is closed, value is [%v]", i)
        
    

close的channel， 从里面可以一直取到值，不过是默认值，具体值取决于类型。