VCS2010_05_04 – Polymorphism via Abstract Classes
Building on the previous video, this second approach to polymorphically calling a method on two different types focuses on using abstract classes, which as we’ll see is very similar to the previous implementation (using simple inheritance). Abstract classes provide no base implementation of a given method, relying solely on the derived classes to supply an implementation of the method. Bob discusses both the technique and the reason why you would want to take this approach.
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