What is design-patterns-in-swift?

This repository is a cheat-sheet of design patterns implemented in Swift, the programming language used to build apps for Apple platforms. Design patterns are reusable solutions to common problems in object-oriented software, originally catalogued by a group of authors often referred to as the Gang of Four (a term the repo's topics include). The description and topics say the examples are written in Swift 5.0 and presented as a short cheat-sheet. The README organises the patterns into the three classic families: Behavioral, Creational, and Structural. Behavioral patterns cover how objects talk to each other and includes entries like Chain of Responsibility, Command, Interpreter, Iterator, Mediator, Memento, Observer, State, Strategy, Template Method, and Visitor. Creational patterns deal with how objects are made and includes Abstract Factory, Builder, Factory Method, Monostate, Prototype, and Singleton. Structural patterns describe how objects are composed and includes Adapter, Bridge, Composite, Decorator, Facade, Flyweight, Protection Proxy, and Virtual Proxy. Each entry gets a short description of what the pattern is for plus a self-contained Swift example showing one way to implement it, and the project ships everything as an Xcode Playground download so you can run the snippets interactively. You would use this repository as a learning resource or quick reference when you are studying design patterns, preparing for an interview, or trying to recognise a pattern that fits a problem you have in a Swift project. It is not a library you install, it is documentation and runnable example code. The full README is longer than what was provided.