abstract

OOP concept: Abstract describes something that is declared but not fully defined. For example, an abstract method is a method that is declared as a part of a class, but has no implementation. It cannot be called, it is only meant to be inherited by derived classes.

SIDL keyword: Abstract is an optional modifier for both classes and methods. An abstract method is a method that has no implementation, it's a way of declaring a method that every subclass must implement for itself. An abstract class has one or more abstract methods, and therefore cannot be instantiated.





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users_guide Last Modified 2005-03-23

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