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骑兵军团我们有了，但是大规模骑兵军团作战的经验还少。新娘来了，她有很多话要说。新婚的伊丽莎·施莱辛格剖析婚礼习俗，深挖有关自己婚礼的笑料。不过，大多时候，三少爷是很聪明讨人喜的，他带他玩也不嫌烦。The Liskov Substitution Principle (LSP) is one of the basic principles of object-oriented design. The Richter substitution principle says that wherever a base class can appear, subclasses can certainly appear. LSP is the cornerstone of inheritance reuse. Only when derivative classes can replace base classes and the functions of software units are not affected can base classes be truly reused, and derivative classes can also add new behaviors to base classes. The Richter substitution principle is a supplement to the "open-close" principle. The key step to realize the "open-close" principle is abstraction. The inheritance relationship between the base class and the subclass is the concrete realization of abstraction, so the Richter substitution principle is the specification of the concrete steps to realize abstraction. --From Baidu 玛雅是一部神秘的惊悚小说，讲述了伊卡洛和阿德里安娜之间的故事，从他们相遇的那一刻起，直到她消失，不复存在的那一天。环顾四周，就能发现他房间里到处贴着秦思雨的白发倾城、还有穿着杏黄衣衫等各种造型的古装照。