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kotlinlang

is there a way to write `foobar` so that I can pass ::class of either subclasses? <https://pl.kotl.in/Y5NcoKR3K>

Neither `Boy` nor `Girl` subclass `Parent` in your example.

Don’t know if I understood you correctly, but might be what you are searching for

forgot to make Boy/Girl subclasses of Parent in the example :slightly_smiling_face: in real code they are...

so that would mean that KClasses of A and B are in a subtyping relationship if A and B are in a subtyping relationship?

Yep: <https://kotlinlang.org/docs/reference/generics.html#variance>

I don’t think so. KClasses are not in a relationship. The generic is, so you are just telling the type system, that everything which comes in, must be at least of type person. But this doesn’t really create a relationship for the class object, as both are from type ‘KClass’ and only their generic type is from ‘A’ or ‘B’

Probably doesn’t make sense :man-facepalming:

it kind of does! and it seems to work :wink: