Guys, is it possible to create a function for both array and collection? They don't even have iterable in common 😞

No, it's not possible

you can make then depend on the output

fun <T> someFunc() : T {}

You can get iterator from array tho

oh but they dont have anything in common.

I can also go

toList()

, but I didn't want to create 2 functions xD

not sure, but maybe you can try something like this:

inline fun <reified T> someFunc()  : YourReturnType {
 // do your checks on T, if array or list 
}

I don't think this will work in my case, as I need it to be an extension function, and I don't want it to be in the Any namespace

This is a really bad way to implement it, what should happen if T is not List and not Array? IlligalArgumentException? It's essentially dynamic typing

I'll create an overload for array that calls the toList

Why not just let user of your function to use toList, or even asLiwt to avoid data copying

We wanted to make using these functions as easy as possible, with matchers for many types out-of-the-box

yes. that would not work if it's not a list or an array.

Most people won't be using an array.

That's true

Anyway, it depends on case, I would just provide extension for Iterable

But Array isn't Iterable

Because Array is a low-level platform-specific primitive

Array is not Iterable, but user of your API easily can convert it to any Iterable depending on case. Providing an array overload imo make sense only if this API is somehow optimized for array