iterator.go

type IntContainer []int

func (i IntContainer) Iterator() <-chan int {
	ch := make(chan int)
	go func() {
		for _, val := range i {
			ch <- val
		}
		close(ch)
	}()
	return ch
}

func main() {
	c := IntContainer([]int{1, 2, 3, 4, 5})
	for x := range c.Iterator() {
		println(x)
	}
}