Design Patterns in Ruby Summary of the design patterns explained in the book Design Patterns in Ruby , where Russ Olsen explains and adapts to Ruby 14 of the original 23 GoF design patterns. Design Patterns GoF Patterns Adapter : helps two incompatible interfaces to work together Builder : create complex objects that are hard to configure Command : performs some specific task without having any information about the receiver of the request Composite : builds a hierarchy of tree objects and interacts with all them the same way Decorator : vary the responsibilities of an object adding some features Factory : create objects without having to specify the exact class of the object that will be created Interpreter : provides a specialized language to solve a well defined problem of know domain Iterator : provides a way to access a collection of sub-objects without exposing the underlying representation Observer : helps building a highly integrated system, maintainable and avoids coupling between classes Proxy : allows us having more control over how and when we access to a certain object Singleton : have a single instance of certain class across the application Strategy : varies part of an algorithm at runtime Template Method : redefines certain steps of an algorithm without changing the algorithm's structure Non-GoF Patterns: Patterns For Ruby Convention Over Configuration : build an extensible system and not carrying the configuration burden. Domain-Specific Language : build a convenient syntax for solving problems of a specific domain. Meta-Programming : gain more flexibility when defining new classes and create custom tailored objects on the fly. Contributing Contributions are welcome! What could you do?: Find typos and grammar mistakes Propose a better way to explain a pattern Add clearer examples of a pattern usage Add other GoF patterns that are not covered in the book Code examples refactoring PR's will not be considered . The examples provided by Russ Olsen in his book are meant to be simple and self explanatory, not the best performing or most elegant, their purpose is just educational.
