Goroutine 緩沖通道死鎖

Question

在主 goroutine 中，如果我向通道發送超出容量的值，我會遇到死鎖，但是如果我在不同的 goroutine 中發送，就不會出現死鎖，為什么？

func main() {
    c := make(chan int, 2)
    for i := 0; i < 3; i++ {
        c <- i
    }
}

func main() {
    c := make(chan int, 2)
    go func() {
        for i := 0; i < 3; i++ {
            c <- i
        }
        close(c)
    }()
    time.Sleep(5 * time.Second)
}

Answer 1

func main() {
   c := make(chan int, 2)
   for i := 0; i < 3; i++ {
       // Blocking operation
       c <- i
   }
}

By default >>>sends<<< and receives block(!) until both the sender and receiver are ready

結帳 - https://gobyexample.com/channels

您的頻道上沒有接收者，主 goroutine（= 發送者）被阻止