(by Gamma, Helm, Johnson, Vlissides (Addison-Wesley, 1995, ISBN 0-201-63361-2) )

Creational Patterns

-- Abstract Factory (87): Provide an interface for creating families of related or dependent objects without specifying their concrete classes
-- Builder (97): Separate the construction of a complex object from its representation so that the same construction process can create different representations
-- Factory Method (107): Define an interface for creating an object, but let subclasses decide which class to instantiate. Factory Method lets a class defer instantiation to subclasses.
-- Prototype (117): Specify the kinds of objects to create using a prototypical instance, and create new objects by copying this prototype
-- Singleton (127): Ensure a class only has one instance, and provide a global point of access to it

Structural Patterns

-- Adapter (139): Convert the interface of a class into another interface clients expect. Adapter lets classes work together that couldn't otherwise because of incompatible interfaces
-- Bridge (151): Decouple an abstraction from its implementation so that the two can vary independently
-- Composite (163): Compose objects into tree structures to represent part-whole hierarchies. Composite lets clients treat individual objects and compositions of objects uniformly
-- Decorator (175): Attach additional responsibilities to an object dynamically. Decorators provide a flexible alternative to subclassing for extending functionality
-- Facade (185): Provide a unified interface to a set of interfaces in a subsystem. Facade defines a higher-level interface that makes the subsystem easier to use
-- Flyweight (195): Use sharing to support large numbers of fine-grained objects efficiently
-- Proxy (207): Provide a surrogate or placeholder for another object to control access to it

Behavioral Patterns

-- Chain of Responsibility (223): Avoid coupling the sender of a request to its receiver by giving more than one object a chance to handle the request. Chain the receiving objects and pass the request along the chain until an object handles it
-- Command (233): Encapsulate a request as an object, thereby letting you parameterize clients with different requests, queue or log requests, and support undoable operations
-- Interpreter (243): Given a language, define a representation for its grammar along with an interpreter that uses the representation to interpret sentences in the language
-- Iterator (257): Provide a way to access the elements of an aggregate object sequentially without exposing its underlying representation
-- Mediator (273): Define an object that encapsulates how a set of objects interact. Mediator promotes loose coupling by keeping objects from referring to each other explicitly, and it lets you vary their interaction independently
-- Memento (283): Without violating encapsulation, capture and externalize an object's internal state so that the object can be restored to this state later
-- Observer (293): Define a one-to-many dependency between objects so that when one object changes state, all its dependencies are notified and updated automatically
-- State (305): Allow an object to alter its behavior when its internal state changes. The object will appear to change its class
-- Strategy (315): Define a family of algorithms, encapsulate each one, and make them interchangeable. Strategy lets the algorithm vary independently from clients that use it.
-- Template Method (325): Define the skeleton of an algorithm in an operation, deferring some steps to subclasses. Template Method lets subclasses redefine certain steps of an algorithm without changing the algorithm's structure
-- Visitor (331): Represent an operation to be performed on the elements of an object structure. Visitor lets you define a new operation without changing the classes of the elements on which it operates


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Last modified 30 May 2021