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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.杨长帆不及回答，**就开始被布条各种量了。被君王猜忌是一件很危险的事情，韩信现在最基本的要求就是保住自己的性命。Taking the CSRFTester tool as an example, the testing principle of the CSRF vulnerability detection tool is as follows:秦淼对这却不大感兴趣，一副无所谓的模样。林聪等人都傻眼：往常这两个人可是很默契的呀，这唱的是哪一出戏？汪魁忙插进来道：我说黎兄弟，胡钧跟林聪的交情可比你深。First of all, I would like to express my expectation for updating the difficulty options of the game.