Like `interface MyInterface: T where T : SomeType`...

# announcements

[Jay]

Like interface MyInterface: T where T : SomeType ?

[Pavlo Liapota]

You can specify this at usage point only:

fun <T> foo(o: T) where T : MyClass, T : MyInterface {
    // ...
}

So it is still possible to declare class that implements interface MyInterface and does not extend MyClass, but at least you will not be able to pass such instance to this function.

[Jay]

Ok thanks - that might be useful. I’m fighting against frameworks that want me to subclass everything, instead of providing interfaced components that I can re-use. Trying to decouple my implementations.

[SOFe]

I was just about to mention composition over inheritance until I saw the last message 😂