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Re: Re: Re: The world is not object oriented

by hardburn (Abbot)
on Jan 02, 2004 at 16:34 UTC ( #318345=note: print w/replies, xml ) Need Help??

in reply to Re: Re: The world is not object oriented
in thread The world is not object oriented

The inheritance tree is called that, because it is used for implementing inheritance, not polymorphism. Polymorphism means you have several things, that you can treat in a uniform way, for example because they all implement the same interface.

Subclasses, in general, have the same interface as their parents, which means that polymorphism and inheirtance are tightly bound.

I wanted to explore how Perl's closures can be manipulated, and ended up creating an object system by accident.
-- Schemer

: () { :|:& };:

Note: All code is untested, unless otherwise stated

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Re: Re: Re: Re: The world is not object oriented
by chromatic (Archbishop) on Jan 02, 2004 at 17:30 UTC

    Yes and no. It's exceedingly difficult to have inheritance without polymorphism but it's exceedingly useful to have polymorphism without inheritance. Polymorphism is the principle. Inheritance is one application.

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