<https kotlinlang slack com archives general p14514009830071 kotlinlang #announcements

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ilya.gorbunov

12/29/2015, 3:01 PM

https://kotlinlang.slack.com/archives/general/p1451400983007173 Compiler tries to infer common supertype of your reducers, one taking

(State, Int)

and other taking

(State, String)

and it appears to be

(State, Nothing)

because no type can be at the same time a

String

and an

Int

(except

Nothing