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Composition is More Important Than Inheritance More | Login | Reply

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Disentangle Polymorphism and Inheritance! (Score:1)

by chromatic (983)

If inheritance was as important in design as generally seems to be believed, then CPAN would consist mostly of derived classes, with only a relatively small number of base classes.

Perhaps you would, if CPAN modules generally had good design (I'm not willing to make that assumption in general) or if module authors were truly egoless programmers (I point you to templating systems, argument processing modules, web frameworks, class creation modules...).
Polymorphism is useful only when you have a subclass
- Re:Disentangle Polymorphism and Inheritance! (Score:2)
  
  by malte (1708) on 2007.02.10 5:15 (#53182) Homepage Journal
  
  Very True. JavaScript and other prototype-based languages are good examples of languages that implement a very extreme form of polymorphism without even supporting language-level inheritance.
  
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