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Expert Python Programming - Second Edition by Tarek Ziadé, Michał Jaworski

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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, Addison-Wesley Professional, written by Gamma, Helm, Johnson, and Vlissides, also known as 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 an application code, these patterns help in solving common problems. 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 ...

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