I was thinking of this while doing it but I could not remember. Trying to do it all from memory.

I can't do this anymore

The problem statement mentions two kinds of values, so if it's not one, then it's the other. There's no second thing you can test.

The spec doesn't say that there should be any such check, it even says that there won't be any NaN (why would there be?)

This solution has no NaN checks.

Insightful!

why did i forget about this, lmao

Fails x²-1.

The question says 'a function that takes a list of non-negative integers'.
so there wouldn't be any array with negative numbers.
plus that I don't understand why u said in your exmaple it should return only 2 and 3. what about 3.5?

What the...

Great bro!

Thanks for explaining it I was wondering

Sad that I forgot about slicing! :")

How it is beneficial to add an extra function inside when a simple call back will do ?

YES!