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SourceMaking is a comprehensive online guide to software design patterns, anti-patterns, and refactoring, featuring a searchable pattern library with detailed explanations, diagrams, and code examples across multiple languages.
More resources on Software Design Patterns
Design Patterns: Elements of Reusable Object-Oriented Software
The catalogue that named the field: 23 patterns in creational, structural and behavioural groups, each with intent, applicability, structure, consequences and C++/Smalltalk sample code. After it you can recognise recurring object-oriented designs and discuss them in shared vocabulary.
refactoring.guru
Refactoring.guru is a comprehensive learning hub for software engineers focused on design patterns and refactoring, offering clear explanations, code examples in multiple languages, and visual diagrams. It covers the Gang of Four design patterns, refactoring techniques, and practical guidance for writing clean, maintainable code.
Design Patterns
Learn software design patterns with this course by Dmitri Nesteruk! Master practical techniques for elegant and maintainable code.
Game Programming Patterns
Robert Nystrom's complete book, readable free online, revisits classic patterns such as Command, Observer, and State through game code, then adds game-specific ones like Game Loop, Component, and Object Pool, with C++ examples and frank discussion of each pattern's performance and design trade-offs.
Refactoring Guru - Design Patterns
Illustrated catalog of the 22 classic Gang of Four patterns, grouped as creational, structural, and behavioral. Each entry explains the problem, the solution structure with UML diagrams, applicability, pros and cons, and working code in several languages including Java, Python, and TypeScript.
Coding Blocks
Podcast (2013–2024) in which three working software engineers discuss design patterns, software architecture, object-oriented design, databases, performance and classic programming books in long conversational episodes. Listeners gain practical vocabulary and judgement for structuring maintainable code in any mainstream object-oriented language.