Is smartcasting currently only available in kotlin...

# multiplatform

[stefanus ayudha]

Is smartcasting currently only available in kotlin jvm?

[jamshedalamqaderi]

Yeah. In any platform it is available.

[stefanus ayudha]

wait, "Yeah" and "In any platform it is available" is contradicting, which one is right 😅

[stefanus ayudha]

btw i have tried, I'm using kotlin 2.0.20-Beta1
it is not working.

[Wout Werkman]

You are using is instead of as 🙂

[Sergey Y.]

But according to this slide it must work

[Wout Werkman]

Ah I see, this is a different scenario. Here animal is declared as val, not var. (You can't see it on the image, but otherwise it's not possible).

[Sergey Y.]

Oh, you're correct, global var prevents any smart casting

[Wout Werkman]

(also, I think you mean to use animal.purr() instead of animalIsCat.purr() 🙂

[stefanus ayudha]

sorry my bad, here is updated one.

[stefanus ayudha]

also with val is still not working

[Wout Werkman]

Hmm interesting, I think think it should actually work... Perhaps they limited the DFA for globals, but I doubt that...

[Wout Werkman]

It should work for sure if you inline the animalIsCat variable

[Wout Werkman]

For me it works on 2.0.0 https://pl.kotl.in/2K04leoPR

[SaurabhS]

IDEA does not enable K2 Mode by default. It should probably compile successfully.

[jamshedalamqaderi]

Check this example in Kotlin: 2.0
https://pl.kotl.in/r2qEGaxmU