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2018-03-04 16:41:14田横拱手道：既如此，就有劳范先生了。Dependence Inversion Principle (DIP) means that abstraction should not depend on details, and details should depend on abstraction, which is the proposed "interface-oriented programming, not implementation-oriented programming". This can reduce the coupling between customers and specific implementations.The fundamental reason for using design patterns is to adapt to changes, improve code reuse rate, and make software more maintainable and scalable. In addition, the following principles should be followed when designing: single responsibility principle, open and closed principle, Richter substitution principle, dependency inversion principle, interface isolation principle, composite reuse principle and Dimit principle. Each design principle is described below.有传言称远藤贤一宣布了一项“实际退休声明”。　　十岁女孩宋永芳目睹家中巨变，为寻仇人只身闯荡上海滩，凭借出众的歌艺和独特的个性得到上海滩大老板段绍荣的青睐，改名为小金宝。唐立平是段绍荣的拜把兄弟，表面上他凡事唯段绍荣马首是瞻，暗地里却觊觎老大的位置。唐立平之弟唐立天是进步青年，深受红色思想的影响。女段先问她一路可好，又向葫芦引见她。