ta_shuo

Go by Example - Range over Channels

翻译自 https://gobyexample.com/

Go by Example

Go is an open source programming language designed for building simple, fast, and reliable software.

Go by Example is a hands-on introduction to Go using annotated example programs. Check out the first example or browse the full list below.

Go by Example: Range over Channels

在前面的示例中看到forrange语句如何给基本数据类型提供迭代操作,我们也可以用它们来迭代channel中接收到的值。

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package main
import "fmt"
func main() {
// 定义有两个字符串缓存区的channel queue
// 我们将要迭代queue中的两个值
queue := make(chan string, 2)
queue <- "one"
queue <- "two"
close(queue)
// range会迭代queue中接收到的每个值
// 由于在上面已经close掉管道queue,所以在接收完两个值之和迭代就结束了
for elem := range queue {
fmt.Println(elem)
}
}
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tashuo:golang ta_shuo$ go run r_channel.go
one
two

上面的示例中也看出可以关闭掉一个还有待接收值的非空管道。

原文链接:Go by Example: Range over Channels