Hi there, I have a couple of extension functions f...

# stdlib

[Esa]

Hi there,
I have a couple of extension functions for Iterable<T> that has been very useful to me personally, and I wish to make a contribution to the stdlib with those. 🙂 I read through this link and was suggested to make my plans known to #kontributors, however they sent me here. So here's what the functions are basically:

list.validatedFold - this is a function that iterates through the elements of an ordered list, and verifies that elements n and n+1 pass some validation function. returns true if all elements pass, or false on the first element that does not pass (early return).
list.flatMapIndexedNotNull - essentially what the name says, it was relevant for me in one case and I didn't find it in the stdlib.

Do you think these are appropriate contributions?

[Marc Knaup]

Why would you need NotNull in a flatMap scenario? You can just return emptyList() to make it a no-op.

[Esa]

That's fair. I can skip that one as it can be achieved in the other way that you suggested.

[ilya.gorbunov]

validateFold looks much like zipWithNext to me, or at least can be achieved with that.