设计模式学习22 总结

整个设计模式的学习是通过msdn webcast来进行的，首先感谢“李建忠”老师辛勤的讲解（这个视频教程的时间可能是比较老的，好像是05年东西），但是通过整个教程的学习，感觉还是收获很多，对于面向对象有了更深的理解。

下面是整个设计模式的总结：

Creational Patterns
Abstract Factory	Creates an instance of several families of classes，解决的多系列对象创建问题。
Builder	Separates object construction from its representation，解决的是复杂对象创建，这个对象的各个部分是变化，但是算法是相对固定的。
Factory Method	Creates an instance of several derived classes，对象创建时，对象的内容是不断变化的，但是对象接口是相对固定的。
Prototype	A fully initialized instance to be copied or cloned，对象可能是不断变化的，但是接口是相对固定的。
Singleton	A class of which only a single instance can exist。

Structural Patterns
Adapter	Match interfaces of different classes，将现有系统应用到新系统中，解决接口不匹配问题。
Bridge	Separates an object’s interface from its implementation，解决的是对象在两个维度的变化。
Composite	A tree structure of simple and composite objects，整体部分结构，树形组织接口。
Decorator	Add responsibilities to objects dynamically，动态给某个对象增加功能。
Facade	A single class that represents an entire subsystem
Flyweight	A fine-grained instance used for efficient sharing
Proxy	An object representing another object

Behavioral Patterns
Chain of Resp.	A way of passing a request between a chain of objects
Command	Encapsulate a command request as an object
Interpreter	A way to include language elements in a program
Iterator	Sequentially access the elements of a collection
Mediator	Defines simplified communication between classes，解决的是多个类之间交互的问题，使用一个单独的类来管理。
Memento	Capture and restore an object's internal state
Observer	A way of notifying change to a number of classes
State	Alter an object's behavior when its state changes
Strategy	Encapsulates an algorithm inside a class
Template Method	Defer the exact steps of an algorithm to a subclass
Visitor	Defines a new operation to a class without change，类拓展。

设计模式目录：

• singleton
• Abstract Factory
• Builder Pattern
• Factory Pattern
• Prototype
• Adapter
• Bridge
• Composite
• Decorator
•  Facade
• Flyweight
• Proxy
• Template Method
• Command
• Interpreter
• Mediator
• Chain Of Responsibility
• Memento
• Visitor
• Strategy
•  State

                                                                                                                                               2010年暑假于Club