Mastering Go - Second Edition

Channels of channels

A channel of channels is a special kind of channel variable that works with channels instead of other types of variables. Nevertheless, you still have to declare a data type for a channel of channels. You can define a channel of channels using the chan keyword twice in a row, as shown in the following statement:

c1 := make(chan chan int) 

The other types of channels presented in this chapter are far more popular and useful than a channel of channels.

The use of channels of channels is illustrated using the code found in chSquare.go, which will be presented in four parts.

The first part of chSquare.go is as follows:

package main 
 
import ( 
    "fmt" 
    "os" 
    "strconv" 
    "time" 
) 
 
var times int 

The second code portion from chSquare.go ...