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What is "String with Int" supposed to mean?

What is String with Int?

It's an intersection type. I.e. a value of this type must be an Int and a String simultaneously.

I don't think that's even possible.

Yes, this is an uninhabited type. However, in general if you replace Int and String with some types A and B, you'll get PartialFunction[A with B, Unit] and the compiler doesn't have a special case for this.

Categories : Scala

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