Mastering Go - Second Edition

Specifying the order of execution for your goroutines

Although you should not make any assumptions about the order in which your goroutines will be executed, there are times when you need to be able to control this order. This subsection illustrates such a technique using signal channels.

You might ask, "Why choose to execute goroutines in a given order when simple functions could do the same job much more easily?" The answer is simple: goroutines are able to operate concurrently and wait for other goroutines to end, whereas functions executed in sequence cannot do that.

The name of the Go program for this topic is defineOrder.go, and it will be presented in five parts. The first part of defineOrder.go follows:

package main import ( "fmt" ...