手机偷拍 国产

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是不是还没我写的好呢。Sichuan ProvinceWrite_plt=elf. Symbols ['write']一群非常奇特的劫匪袭击了莫奈达和廷布雷的工厂，将自己与人质反锁在西班牙皇家造币厂内，八名窃贼他们背后的犯罪首脑则妄图操纵警察实现自己的计划。实施了西班牙历史上最完美的抢劫，并夺回了2.4亿欧元。