Hands-On System Programming with Go

Multiple goroutines

Organizing code in multiple goroutines can be helpful to split the work between processors and has many other advantages, as we will see in the next chapters. Since they are so lightweight, we can create a number of goroutines very easily using loops:

func main() {    for i := 0; i < 10; i++ {        go fmt.Println(i)    }    time.Sleep(time.Nanosecond)}

The full example is available at https://play.golang.org/p/Jaljd1padeX.

This example prints a list of numbers from 0 to 9 in parallel, using concurrent goroutines instead of doing the same thing sequentially in a single goroutine.