I'm curious if there might be any subtle differenc...

# announcements

[lifter]

I'm curious if there might be any subtle difference between how y and z are defined, or is it really the same thing?

val x: Int? = 0
val y = x!!
val z = x as Int

[Shawn]

I mean it’s not quite the same thing

[Shawn]

x!! will throw a NullPointerException if it’s null

[Shawn]

x as Int will throw a ClassCastException

[lifter]

OK, good point.

[Dico]

it will throw kotlin.TypeCastException.

[Dico]

and the prior throws kotlin.KotlinNullPointerException