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Expert Python Programming by Tarek Ziadé

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Chapter 14. Useful Design Patterns

A design pattern is a reusable, somewhat language-specific solution to a common problem in software design. The most popular book on this topic is Design Patterns: Elements of Reusable Object-Oriented Software, written by Gamma, Helm, Johnson, and Vlissides a.k.a. the Gang of Four or GoF. It is considered as a major writing in this area, and provides a catalogue of 23 design patterns with examples in SmallTalk and C++.

While designing a code application, these patterns are good and known references. They ring a bell to all developers since they describe proven development paradigms. But they should be studied with the used language in mind, since some of them do not make sense in some languages or are already ...

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