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kotlinlang

`+` on `Iterable` is not it since it returns a list

voddan: `List` is `Iterable`, so what's the problem with using `+` and treating result as `Iterable`?

The initial question implied that an iterator would be created which would delegate to the initial lists without allocating additional space

Ohh... the costs. Maybe I will have a project where I need to worry about them too.

If you do `l1 + l2 + l3 + l4 + l5` you allocate N^2 with lists. You may actually notice that :wink: