13
POLYMORPHISM: A REVIEW
13.1 POLYMORPHISM
We have already introduced ourselves with ‘polymorphism’ in Section 5.1 wherein it was defined as an entity or object having two or more forms. In object-oriented programming (OOP), functions and operators can be overloaded to achieve polymorphic behaviour.
Polymorphic functions have one name with different implementations. If the functions belong to different classes then a message (say ‘close’) can be interpreted differently by different objects resulting in different responses as shown in Fig. 13.1.
Figure 13.1 Polymorphic behaviour of objects
13.2 TAXONOMY OF POLYMORPHISM
Cardelli and Wegner gave ...
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