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问道：你说真的？你没哄我？小葱摇头道：我没哄你。In real life, China's income tax is divided into enterprise income tax, foreign-invested enterprises or foreign-invested enterprises income tax and personal income tax. For these three types of income tax, each is calculated in a different way. Personal income tax has a personal income tax calculation method, while enterprise income tax has its corresponding calculation method. If we do not adopt the policy mode to realize such a requirement, we will define an income tax class, which has an attribute to identify the type of income tax and a CalculateTax () method to calculate the tax. In this method, we need to judge the tax type and calculate the income tax for different tax types through if-else statements. Such an implementation can indeed solve this scenario, but such a design is not conducive to expansion. If the system needs to add an income tax in the later period, it has to go back and modify the CalculateTax method to add an additional judgment statement, which clearly violates the principle of "open-closed". At this time, we can consider using the strategic mode to solve this problem. Since the tax method is the changing part of this scenario, we can naturally think of abstracting the tax method at this time, which is also the essence of the implementation of the strategic mode.In the interview program "Transparent Man", Jiang Sida interviewed a well-known divorce lawyer. She has handled at least 400 divorce cases and witnessed the marriage change from a 7-year itch to a 3-year itch.-Deng Bin (Initiator of Book Sharing)The main purpose of the meta-sharing mode is to realize the sharing of objects, i.e. The shared pool, which can reduce the memory overhead when there are many objects in the system and is usually used together with the factory mode.赵本山主演的贺岁喜剧电影，汇聚了闫妮、热依扎、炎亚纶、潘斌龙、大鹏、张译、梁静、周冬雨、于和伟、连奕名等众多明星。2016年大年初一，百星报喜，爆笑过年！玉米绕着林子里的树不住转圈，嘴里也不住呼喝狗儿，这边，这边来。