Goroutine Handoff

A goroutine can send a result back to the main flow through a channel.

goroutine_handoff.go

package main

import "fmt"

func main() {
	var label = 
	done := make(chan string)

	go func() {
		done <- "worker:" + label
	}()

	message := <-done
	fmt.Println("label=", label)
	fmt.Println("message=", message)
	fmt.Println("received=", true)
}

package main

import "fmt"

func main() {
	var label = 
	done := make(chan string)

	go func() {
		done <- "worker:" + label
	}()

	message := <-done
	fmt.Println("label=", label)
	fmt.Println("message=", message)
	fmt.Println("received=", true)
}

package main

import "fmt"

func main() {
	var label = 
	done := make(chan string)

	go func() {
		done <- "worker:" + label
	}()

	message := <-done
	fmt.Println("label=", label)
	fmt.Println("message=", message)
	fmt.Println("received=", true)
}

goroutine A goroutine runs a function concurrently, and a channel can make the handoff deterministic.