Hands-On High Performance with Go

Goroutines in action

Now that we have a basic understanding of the underlying principles of goroutines, we can check them out in action. In the following code block, we will see how to invoke a goroutine using the go call:

package main import ( "fmt" "time")  func printSleep(s string) { for index, stringVal := range s { fmt.Printf("%#U at index %d\n", stringVal, index) time.Sleep(1 * time.Millisecond) // printSleep sleep timer } }  func main() { const t time.Duration = 9  go printSleep("HELLO GOPHERS") time.Sleep(t * time.Millisecond) // Main sleep timer fmt.Println("sleep complete")} 

During the execution of this function, we only get a partial return of the printSleep() function wrapped in the goroutine call (printing HELLO GOPHERS) before ...