Assume the following:
interface IFace {
void foo();
void bar();
}
abstract class A : IFace {
override void foo() {}
}
class B : A {
override void bar() {}
}
Now why this fails to compiler with the following message:
--->>>
function bar does not override any function, did you mean to
override 'IFace.bar()'?
<<<---
Obviously, I meant that, since the abstract class A implements
IFace, and B derives from A.
Do I need to declare IFace's unimplemented methods in A as
abstract? If yes, why? Isn't that already obvious enough (any
unimplemented virtual function is abstract)?
