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In [[software engineering]], '''behavioral design patterns''' are [[Software design pattern|software design patterns]] that identify common communication patterns between objects and realize these patterns.

By doing so, these patterns increase flexibility in carrying out this communication.

== Description ==

Examples of this type of design pattern include:

* [[Chain of responsibility pattern]]: Command objects are handled or passed on to other objects by logic-containing processing objects
* [[Command pattern]]: Command objects encapsulate an action and its parameters
"Externalize the Stack": Turn a recursive function into an iterative one that uses a stack
* [[Interpreter pattern]]: Implement a specialized computer language to rapidly solve a specific set of problems
* [[Iterator pattern]]: Iterators are used to access the elements of an aggregate object sequentially without exposing its underlying representation
* [[Mediator pattern]]: Provides a unified interface to a set of interfaces in a subsystem
* [[Memento pattern]]: Provides the ability to restore an object to its previous state (rollback)
* [[Null Object pattern]]: Designed to act as a default value of an object
* [[Observer pattern]]: aka Publish/Subscribe or Event Listener. Objects register to observe an event that may be raised by another object
* [[Weak reference pattern]]: De-couple an observer from an observable
* [[Protocol stack]]: Communications are handled by multiple layers, which form an encapsulation hierarchy
* [[Scheduled-task pattern]]: A task is scheduled to be performed at a particular interval or clock time (used in real-time computing)
* [[Single-serving visitor pattern]]: Optimise the implementation of a visitor that is allocated, used only once, and then deleted
* [[Specification pattern]]: Recombinable business logic in a boolean fashion
* [[State pattern]]: A clean way for an object to partially change its type at runtime
* [[Strategy pattern]]: Algorithms can be selected on the fly
* [[Template method pattern]]: Describes the program skeleton of a program
* [[Visitor pattern]]: A way to separate an algorithm from an object

== See also ==

* [[Concurrency pattern]]
* [[Creational pattern]]
* [[Software design pattern]]
* [[Software engineering]]
* [[Structural pattern]]

== External links ==

* [https://en.wikipedia.org/wiki/Behavioral_pattern Behavioral pattern] @ Wikipedia.org

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Behavioral pattern - Revision history

Karl Jones: /* External links */

Karl Jones: Created page with "In software engineering, '''behavioral design patterns''' are software design patterns that identify common communication patterns between obje..."