Collection of 23 Gang of Four design patterns implementations in C#. Done mainly for learning purposes but feel free to use them however you want.
Define the ways of communication between objects.
- Chain of Responsibility - handles data by passing it between objects in the chain
- Command - encapsulates command/request into separate class
- Interpreter - executes expressions
- Iterator - sequental access to the elements in the collection
- Mediator - communication between objects using separate class
- Memento - saves and restores object state
- Observer - notifies objects about some event
- State - alters class behaviour
- Strategy - encapsulates algorithms to the separate classes
- Template Method - overrides (by creating subclasses) steps of the algorithm
- Visitor - adds new operation to the class without its change
Define the ways of creating objects using hidden logic instead of directly new keyword use.
- Abstract Factory - creates instances of the specified class family
- Builder - constructs instances with a few steps
- Factory Method - creates instances of the derived classes
- Prototype - creates instance by copying or cloning other object
- Singleton - ensures that there is only one instance of the class
Define the ways of composing objects and classes to add or change functionality.
- Adapter - matches interfaces of different classes
- Bridge - separates interface from its implementation
- Composite - composes object using tree structure
- Decorator - adds new responsibilities to the existing class
- Facade - class representing a few subsystems
- Flyweight - small and reusable objects
- Proxy - controlls the access to the object