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Obj. Method ();《花样爷爷搜查队》:由李顺载，金希澈，边熙峰，张光等主演。电视剧《花样爷爷搜查队》讲述在探案过程中突然变成70代老人的年轻警察们与一名20代精英警察共同寻找还童方法的喜剧故事。集侦探、科幻、刑警、花美男、搞笑于一体，题材新颖，别具一格，趣味盎然。李顺载出演家境贫寒记忆超群毒舌精英警察李俊赫一角。那再添一条命。——人皇伐天。刚刚平定了赵地，正在整编和训练投降的赵国士兵，准备稍微有些模样之后，仿照河东郡，将他们派去支援大王。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.