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
String str= "Hello, World";
你们会请她们去?可见你们是欣赏她们的。
刀手暂缓,毛海峰转向沈悯芮问道:美人,你也要谈条件?沈悯芮站了这么久,心中已经历了太多太多。
19. Memento)
第五季主要讲述了男主角莫凡在觉醒恶魔化之后克服了恶魔系反噬,下决心帮助唐月解决宋城玄蛇危机,展现出了更强的自我控制力。在莫凡、唐月、灵灵、张小侯等人的共同努力下,主角团与善良的灵兽团结一心,并肩作战,最后成功守护了家园,展现出人与兽类超越物种的深厚友情。