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
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田遥却哈哈大笑，指着素谨道：我父子二人何其有幸，先后遇见你们这对母女，一样无耻，一样蛇蝎心肠。
1. Maximum speed for roads without speed limit signs and markings: 30 kilometers for urban roads and 40 kilometers for roads without road center lines; Urban roads with only one motorway in the same direction are 50 kilometers and roads are 70 kilometers.
A) Object-oriented paradigm. That is, people's legendary thoughts. Encapsulation, inheritance and polymorphism, in my opinion, are slightly higher than if, for, etc., which are also grammatical problems. The three principles to master in object-oriented programming are Plato principle, Liskov substitution principle and Parnas principle. These three principles are actually very simple. Any principle that you find difficult to fall in love at first sight and quickly identify with is not a good principle.
《爱之债》讲述了购物狂的女主自然而然的就债台高筑，远离都市跑到乡间。帅气多金男主为了逃避豪门订婚，扎了个霓虹小辫也去农村了，一个缺钱，一个缺人，两个人一拍即合，各取所需。于是两人日久生情，面临重重阻碍，最终突破阻碍，幸福生活……
[Depth] Who Is Affecting the Future of China's Crude Oil Futures Market?
But this is not over yet. Ethernet also requires CRC verification when transmitting data. The network card will CRC check the data packet before sending the data, attaching a 4-byte CRC value to the back of the packet header. At this time, the packet length is no longer 40 bytes, but 64 bytes, which is often referred to as SYN packet attack. The packet structure is as follows:
If we have to create an object and initialize it with some data, and at the same time expose some methods that can access these private data, then we can use module mode at this time.
木子与莱恩青梅竹马一起长大，就在一次郊游的途中他们意外发生了车祸。再次醒来的时候，二人被关进了小黑屋，费劲周折终于从小黑屋走了出来。可意外再次发生了，他们迷路了，小小的医院竟然走不出去了，恐怖的事情就此发生了……
So far, the only report in the whole network that has really dug up the specific progress and product layout of SAIC Audi project. This report has a great influence in the automobile circle and has been reprinted and quoted by many mainstream media.
围着篝火，有人见剩下的人就这么几个，不禁心生怯意，有些后悔道：就我们这个几个人，与官府作对怕是有些势单力薄吧？此言一出，立即得到几人附和。
Article 41 [Definition of Illegal Expenses] The term "illegal expenses for breach of contract and violation of regulations" as mentioned in these Regulations refers to the expenses that the medical security fund should not pay due to the violation of medical security laws, regulations, policies and service agreements by units or individuals.
当医学试验达到极限时，最极端的试验在北大西洋的圣莱昂纳兹岛结束。为世界上最暴力的罪犯改造的监狱。但当一项实验出错时，整个岛就变成了一个可怕的、疾病百出的迷宫，供绝望的幸存者使用。
节目通过展示人与宠物的日常生活，宠物与宠物之间的关系，动物们的命运等，关注宠物们的生活并深入挖掘和探讨人与动物之间如何和谐共处。
呵呵。
年老的“教父”面对丧子之痛怎样统领全局？黑手党之间的仇杀如何落幕？谁是家族的内奸？谁又能够成为新一代的“教父”？
