`words is CharSequence` returns `false`. Isn't it ...

# announcements

[pavi2410]

words is CharSequence returns false. Isn't it wierd?

[serebit]

No, because words is a List of Strings, not a String

[pavi2410]

words is not CharSequence, but the method signature says the receiver is CharSequence which creates the confusion.

[pavi2410]

val ls = "abc".split("")
println(ls is CharSequence)

prints false

[pavi2410]

fun main() {
    val c = CLASS()
    println(c is INTERFACE)
}

interface INTERFACE

class CLASS : INTERFACE

prints true

[Kroppeb]

image.png

[Kroppeb]

image.png

[Shawn]

not weird in the slightest.

[pavi2410]

The example doesn't match the method signature.

[Kroppeb]

which example?

[pavi2410]

The one in the picture I sent

[Adam Powell]

you never captured the string into a variable to test its type against, you only captured words, which is the result of an operation performed on the string

[pavi2410]

But words is the variable on which chunked method is called, which is supposed to be of type CharSequence. I am really confused.

[Adam Powell]

you're getting Iterable<E>.chunked, as posted in the pic above

[pavi2410]

That's what I mean. The example doesn't use the chunked function on CharSequence receiver but Iterable

[Adam Powell]

where's the confusion then?

[Adam Powell]

words is not a CharSequence, so it returns false for the is check

[Adam Powell]

words has the type of `.split(' ')`'s return type

[Adam Powell]

which is not CharSequence

[pavi2410]

I know, fun CharSequence.chunked(size: Int): List<String> is not the signature of the chunked call in the example but fun Iterable<T>.chunked(size: Int): List<List<T>> is

[Adam Powell]

oh you're literally referring to the doc sample being for a different overload 🙂

[pavi2410]

so you got me?

[Adam Powell]

looks like it's just a bad docs sample meant for the other overload

[Adam Powell]

it's illustrating the correct behavior of a different function 🙂

[pavi2410]

yes, absolutely

[Adam Powell]

probably worth filing a bug

[pavi2410]

here? https://youtrack.jetbrains.net/issues/KT

[Kroppeb]

Oh is this a sample in the docs?

[pavi2410]

yes

[louiscad]

Yes, the shortcut is kotl.in/issue FYI @pavi2410