head first design pattern - Observer老博客搬运计划 https://www.cnblogs.com/aquar/archive/2010/05/03/3451441.html Observer Pattern有一些观察者对象依赖于主题对象，主题对象管理一些数据，并 ...
head first design pattern -Strategy
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head first design pattern -Strategy老博客搬运计划 https://www.cnblogs.com/aquar/archive/2010/04/18/3451473.html Writers Elisabeth Freeman 提倡女性进行计算机工作 beth@wi ...
head first design pattern - Factory
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head first design pattern - Factory老博客搬运计划 https://www.cnblogs.com/aquar/archive/2010/05/05/3451443.html Factory Pattern当使用new时，就会想到“具体”，因为代码绑着具体的类，缺乏 ...