「久久夜色精品国产网站」久久夜色精品国产网站完整版高清在线点播

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.(can be superimposed)　　真人秀空间从真实情境出发，纪录三组亲密关系人物与家务有关的生活日常。在“男人主理家务”的约定下，展示男人为了经营一个家庭付出的所有努力，承担家庭责任、料理大小家事、处理家庭关系，或尴尬、或有趣、或温情的点点滴滴，在思考和感动中，获得温暖而美好的共鸣。要礼能听懂，前面的话听不懂。青山等人都想起书院确实有这么个邋遢老头儿，因此也不看书了，议论纷纷，又猜测他为何孤身带个儿子，连家也没有。