Mastering Go - Second Edition

Reading from a channel

In this subsection, you will learn how to read from a channel. You can read a single value from a channel named c by executing <-c. In this case, the direction is from the channel to the outer world.

The name of the program that will be used to help you understand how to read from a channel is readCh.go, and it will be presented in three parts.

The first code segment from readCh.go is shown in the following Go code:

package main 
 
import ( 
    "fmt" 
    "time" 
) 
 
func writeToChannel(c chan int, x int) { 
    fmt.Println("1", x) 
    c <- x 
    close(c) 
    fmt.Println("2", x) 
} 

The implementation of the writeToChannel() function is the same as before.

The second part of readCh.go follows:

func main() { c := make(chan int) go writeToChannel(c, ...