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1.设计模式概念1.1 什么地方可以用到设计模式面向对象(OO)=>功能模块[设计模式+算法(数据结构)]=>框架[使用多种设计模式]=>架构[服务器集群] 复制代码1.2 使用设计模式的好处使用设计模式，软件具有很好的可扩展性(可以增加新的功能)使用开发模式，具有很好的维护性(可...

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