Hi all i get an unchecked cast warning on this code ``` typealias Factory lt T gt = gt T private fun Bundle getViewModelFactory gt VIEWMODEL val serializable = getSerializable ARG VIEWMODEL FACTORY return serializable as Factory lt VIEWMODEL gt ``` Shouldn t `as ` take care of this

You can t check generic types using `is` or `as`

Hi all i get an unchecked cast warning on this code ``` type kotlinlang #announcements

06/02/2019, 1:06 PM

Hi all, i get an unchecked cast warning on this code:

typealias Factory<T> = () -> T

    private fun Bundle.getViewModelFactory(): (() -> VIEWMODEL)? {
        val serializable = getSerializable(ARG_VIEWMODEL_FACTORY)
        return serializable as? Factory<VIEWMODEL>
    }

as?

take care of this?

06/02/2019, 2:54 PM

as? still gives the warning for some reason, think that's a bug

06/02/2019, 5:33 PM

At runtime, the type parameter cannot be checked I think. That's what the warning is about.

06/02/2019, 9:55 PM

Thanks. That is it.

06/03/2019, 12:11 AM

oh yeah, that makes sense. it'll check if it's a Function0, but not if it's Function0<VIEWMODEL>. that's fair

06/03/2019, 4:23 PM

If you turn the getViewModelFactory method into a reified function it should get rid of the warning because the type will be known at runtime

06/05/2019, 1:24 AM

Did you try? I suppose reified makes the type known at compile time

06/05/2019, 1:58 AM

Reified makes the type known at runtime

You can't check generic types using

is

as