Diamond Problem

Question

Wikipedia on the diamond problem:

\"... the diamond problem is an ambiguity that arises when two classes B and C inherit from A, and class D inherits from both B and

Answer 1

In the diamond problem, class D implicitly inherits the virtual method from class A. To call it, class D would call:

A::foo()

If both classes B and C override this method, then the problem comes of which actually gets called.

In your second example however, this isn't the case as class D would need to explicitly state which was being called:

B::foo()
C::foo()

So the problems are not actually the same. In the diamond problem you aren't referencing the derived classes, but their base class, hence the ambiguity.

That's how I understand it, anyway.

Note that I'm coming from a C++ background.