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2002年08月16日

Class::Null

Class::Null, on its way to CPAN, implements the Null Class design pattern. The code is exceedingly simple, but the manpage explains the concept in some detail. This class is a by-product of the design for a class system for one of the projects I'm working on. The study of design patterns is actually pretty interesting. Object-Oriented Analysis and Design (OOA and OOD) should be rewarding topics to work on (both intellectually and financially). And it's a chance to show people how much more elegant that pattern could be implemented if they'd just use Perl…

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