3 ms·
> Can a data class extend an ordinary class? Can a data class extend another data class? Can a non-data class extend a data class? No, no, and no. There are in
by kodablah 9y ago
> Can a data class extend an ordinary class? Can a data class extend another data class? Can a non-data class extend a data class?
No, no, and no. There are interfaces with default impls these days, don't allow base class state.
And figure out how to make interfaces "sealed".