PythonのyieldをGolangで

yield.go

// Thanks mattn_jp!!: https://twitter.com/mattn_jp/status/605581283238944768 http://play.golang.org/p/Tzaoh3liuN

package main

import "fmt"

type Tower struct {
	Floor int
}

func (t Tower) String() string {
	return fmt.Sprintf("勇者は%d階を攻略した. 🎉🎉🎉", t.Floor)
}

func GoUpstairs(floors int) chan Tower {
	ch := make(chan Tower)
	go func() {
		floor := 1
		for floor <= floors {
			ch <- Tower{floor}
			floor++
		}
		close(ch)
	}()
	return ch
}

func main() {
	for x := range GoUpstairs(100) {
		fmt.Println(x)
	}
}