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NETTUTS.com: A Beginner's Guide to Design Patterns

Note: This article was originally published at PHPDeveloper on 8 July 2010.
PHPDeveloper

On NETTUTS.com today there's a new tutorial that introduces a bit more advanced concept in the development process - design patterns.

Design patterns are optimized, reusable solutions to the programming problems that we encounter every day. A design pattern is not a class or a library that we can simply plug into our system; it's much more than that. It is a template that has to be implemented in the correct situation. It's not language-specific either. A good design pattern should be implementable in most - if not all - languages, depending on the capabilities of the language.

They introduce a few of the more widely used patterns including the strategy pattern, adapter pattern, factory methods, decorator and singleton patterns. Each comes with a bit of code showing how it would work and a "where would I use this?" section with a better example.