also

averageBy{ .. }

on iterables, as shortcut instead of

map{ }.average()

You can simply create an extension function that would do that

almost everything can be solved manually, but adding to the std-lib would make it useful for everyone

right, my bad, didn't realize we were in #stdlib

np

it's not clear what the return type should be

1- we can infer 2- we have a lambda resolution by return type annotation available We can apply the same logic as

count{ }