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Liskov Substitution Principle, LSP (Richter Substitution Principle) means that subclasses must replace their parent types. In other words, in the process of software development, after the subclass replaces the parent class, the behavior of the program is the same. Only when the subclass replaces the parent class and the function of the software is not affected can the parent class be truly reused, and the subclass can also add new behaviors to the parent class. In order to look at an example of violation of LSP principles, the specific code is as follows:MDT Organization and Implementation Specification总督……休要再说，我一世如此，至少要死得其所。《了不起的儿科医生》讲述了新一代年轻人在“儿科医生”这个特殊岗位上成长与奋斗的故事。本剧通过一个来自丽江的女孩焦佳人以儿科为舞台、在带教老师普外副主任医师邓子昂严格而又细腻的培养下，从一名专培医生成长为一名合格儿科医生的经历，向观众展现医生，尤其是儿科医生最真实的状态。tvN独幕剧2020 十部杨长贵写来的信模棱两可，措辞左右摇摆，杨长帆的回信却是信誓旦旦，只要朝廷做了这两件事，徽王府会出海剿匪。随便卖一点《笑傲江湖》的相关版权就能抵上那一千万了。