Principles of OO Design

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OO的一些基本特性

• 封装(Encapsulation)
• 继承(Inheritance)
• 多态(Polymorphism)
• 内聚(cohesion)
• 耦合(coupling)

进行OO设计的5个原则 (SOLID)

• 单一职责原则（SRP - Single Responsibility Principle）
  A CLASS SHOULD HAVE ONLY ONE REASON TO CHANGE.
• 开放封闭原则（OCP - Open-Closed Principle）
  You should be able to extend a classes behavior, without modifying it.
• 里氏替换原则（LSP - Liskov Substitution Principle）
  Derived classes must be substitutable for their base classes.
  
• 接口隔离原则（ISP - Interface Segregation Principle）
  Make fine grained interfaces that are client specific.
• 依赖倒置原则（DIP - Dependency Inversion Principle）
  Depend on abstractions, not on concretions.

SRP

"There should never be more than one reason for a class to change." — Robert C. Martin

Principles of OO Design

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原文地址：http://www.cnblogs.com/haibinyuan/p/4665668.html