Category Design Patterns

The Facade pattern is a structural design pattern that provides a unified interface to a set of interfaces within a subsystem. It defines a higher-level interface that simplifies interaction with a complex, layered system, thereby reducing dependencies and enhancing usability.…

The Decorator pattern is a structural design pattern that enables dynamic addition of responsibilities to an object without altering its underlying structure. It achieves this by wrapping the object with one or more decorator classes that conform to the same…

The Composite pattern is a structural design pattern that composes objects into tree structures to represent part-whole hierarchies. It allows clients to treat individual objects and compositions uniformly, simplifying interactions with complex, nested structures. Core Intent “Compose objects into tree…

The Bridge pattern is a structural design pattern that decouples an abstraction from its implementation so that both can vary independently. It avoids a permanent binding between an abstraction and its implementation, enabling them to evolve separately. Core Intent “Decouple…

The Adapter pattern is a structural design pattern that enables incompatible interfaces to work together by wrapping an existing class with a new interface. It acts as a bridge between two disparate systems, allowing seamless integration without modifying the original…

The Singleton pattern is a creational design pattern that restricts a class to instantiate only one object and provides a global point of access to that instance. It ensures controlled access to a single shared resource. Core Intent “Ensure a…

The Prototype pattern is a creational design pattern that enables the creation of new objects by cloning an existing object (the prototype) rather than instantiating it from scratch using a constructor. It is particularly effective when object creation is expensive,…

The Factory Method pattern is a creational design pattern that defines an interface for creating an object but allows subclasses to alter the type of objects that will be created. It promotes loose coupling by delegating instantiation to subclasses. Core…

The Builder pattern is a creational design pattern that separates the construction of a complex object from its representation. It allows the same construction process to create different representations of an object. Core Intent “Separate the construction of a complex…