``` val x ChildBar = ChildBar val y ParentBar = x y foo = Pa kotlinlang #announcements

``` val x: ChildBar = ChildBar() val y: ParentBar ...

karelpeeters

12/09/2018, 11:08 AM

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val x: ChildBar = ChildBar()
val y: ParentBar = x
y.foo = ParentFoo()
println(x.foo) //what?

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