Behavioral Patterns

Template Method

Ray	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.

• • Tags
  • Design pattern
  • Template Method
• • Filed under:
  • Behavioral Patterns

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• 6/17/2011 5:30:59 AM
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Visitor

Ray	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.

• • Tags
  • Design pattern
  • Visitor
• • Filed under:
  • Behavioral Patterns

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• 6/17/2011 5:25:41 AM
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Strategy

Ray	Define a family of algorithms, encapsulate each one, and make them interchangeable. Strategy lets the algorithm vary independently from clients that use it.

• • Tags
  • Design pattern
  • Strategy
• • Filed under:
  • Behavioral Patterns

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• 6/17/2011 5:18:45 AM
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State

Ray	Allow an object to alter its behavior when its internal state changes. The object will appear to change its class.

• • Tags
  • Design pattern
  • State
• • Filed under:
  • Behavioral Patterns

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• 6/17/2011 5:07:47 AM
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Observer

Ray	Define a one-to-many dependency between objects so that when one object changes state, all its dependents are notified and updated automatically.

• • Tags
  • Design pattern
  • Observer
• • Filed under:
  • Behavioral Patterns

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• 6/17/2011 5:01:28 AM
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Memento

Ray	Without violating encapsulation, capture and externalize an object's internal state so that the object can be restored to this state later.

• • Tags
  • Design pattern
  • Memento
• • Filed under:
  • Behavioral Patterns

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• 6/17/2011 4:52:12 AM
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Mediator

Ray	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.

• • Tags
  • Design pattern
  • Mediator
• • Filed under:
  • Behavioral Patterns

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• 6/17/2011 4:45:22 AM
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Interpreter

Ray	Given a language, define a representation for its grammar along with an interpreter that uses the representation to interpret sentences in the language.

• • Tags
  • Design pattern
  • Interpreter
• • Filed under:
  • Behavioral Patterns

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• 6/17/2011 4:03:51 AM
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Chain of Responsibility

Ray	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.

• • Tags
  • Design pattern
  • Chain
• • Filed under:
  • Behavioral Patterns

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• 6/17/2011 3:57:50 AM
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Command

Ray	Encapsulate a request as an object, thereby letting you parameterize clients with different requests, queue or log requests, and support undoable operations.

• • Tags
  • Design pattern
  • Command
• • Filed under:
  • Behavioral Patterns

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• 6/17/2011 3:51:35 AM
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Iterator

Ray	Provide a way to access the elements of an aggregate object sequentially without exposing its underlying representation.

• • Tags
  • Design pattern
  • Iterator
• • Filed under:
  • Behavioral Patterns

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• 6/17/2011 12:00:00 AM
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