What is the difference between

isEmpty()

and

none()

?

have you read the docs? they’re very different functions

yes

Looks like they're similar, but the code seems slightly nuanced in that

isEmpty()

is on a collection but

none()

is on an

Iterable

specifically. I'm guessing it's possible for something to be iterable and not a collection and that's where you can use it?

🤔 Interesting...

I'm guessing based on what I saw, I'm not claiming expertise here ha

And..?

only if it's of type collection

I don't really get why they added that method, they should have called it

isEmpty()

too.

You could use

sequence.none()

but not

sequence.isEmpty()

. What is

sequence

? Check out https://medium.com/@elye.project/kotlin-slow-list-and-lazy-sequence-61691fc974c5

@karelpeeters I'd guess that they named it different because it behaves different.

Collection.isEmpty()

checks if there is anything inside the collection,

Iterator.none()

checks if any items are left to iterate over

No it's

Iterable.none

, you don't start with an existing iterator.

oh