Mastering Go - Second Edition

Writing to a channel

The code in this subsection will teach you how to write to a channel. Writing the value x to channel c is as easy as writing c <- x. The arrow shows the direction of the value, and you will have no problem with this statement as long as both x and c have the same type. The example code in this section is saved in writeCh.go, and it will be presented in three parts.

The first code segment from writeCh.go is as follows:

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

    fmt.Println(x) 
} 

The chan keyword is used for declaring that the c function parameter will be a channel, and it should be followed by the type of the channel (int). The c <- x statement allows you ...