I think the reason an interface is not required is so that t kotlinlang #announcements

I think the reason an interface is not required is...

kirillrakhman

07/01/2017, 12:41 PM

I think the reason an interface is not required is so that the requirement can be satisfied by an extension function. E.g. you can do

for (i in iterator)

because there is an extension function

fun Iterator.iterator() = this