One-way Channel in Go language (Let's Go 30)

Through the previous article, we know how to declare the channel Channel, and send and read data. However, what this article wants to talk about is 单向Channel, what exactly is a one-way channel Channel?

The so-called 单向Channel信道, that is, the declared channel Channel, the Channel channel at this moment can only send or read data.

To declare a one-way channel Channel, you can use chan<-to declare a channel that can only send data, and the type of its channel variable is chan<-.

The <-chandeclared channel can only accept data, and the type is <-chan.

var onlyReadChan chan<- readChanType    // 声明一个只能写入数据的信道
var onlyWriteChan <-chan writeChanType    // 声明一个只能读取数据的信道

package main

import (
	"fmt"
)

//定义一个带有 只能发送数据的信道 的参数 函数
func onlySend(ch chan<- string) {
    
    
	ch <- "秋码记录"
	ch <- "https://qiucode.cn"
}

//定义一个带有 只能接受数据的信道 的参数 函数
func onlyRead(ch <-chan string) {
    
    
	for {
    
    
		fmt.Println(<-ch)
	}
}

func main() {
    
    
	var ch = make(chan string)

	go onlySend(ch)
	go onlyRead(ch)

}