And more generally these kind of holes in <#C0B8Q383C|stdlib> where we have `Iterable&lt;Long&gt;.su...

# stdlib

[mg6maciej]

And more generally these kind of holes in #stdlib where we have Iterable<Long>.sum(), but not List<*>.sumByLong (like we have sumBy for ints and sumByDouble).

[ilya.gorbunov]

mg6maciej: We have postponed adding a lot of such variants until the resolution of https://youtrack.jetbrains.com/issue/KT-11265 becomes clear. In case it is implemented, we can have only one function, sumBy and overload it by the return type of the selector.

[mg6maciej]

Makes sense. I'd like to have this implemented although I see how it's problematic to do so.