Go Systems Programming

Reading from a channel

This subsection will improve the Go code of writeChannel.go by allowing you to read from a channel. The presented program will be called readChannel.go and be presented in four parts.

The first part is the following:

package main 
 
import ( 
   "fmt" 
   "time" 
) 

The second part of readChannel.go has the following Go code:

func writeChannel(c chan<- int, x int) { 
   fmt.Println(x) 
   c <- x 
   close(c) 
   fmt.Println(x) 
} 

Once again, note that if nobody collects the data written to a channel, the function that sent it will stall while waiting for someone to read its data. However, in Chapter 10, Goroutines - Advanced Features, you will see a very pretty solution to this problem.

The third part has the following Go code:

func main() { c ...