凤凰私人电影院

1. Projection and shadow setting method of objects他开心地说道：这热水洗澡就是舒坦。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.This case is terrible. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . First of all, it will affect the good mood of the landlord after work.Link: https://pan.baidu.com/s/1adnNy0Hm0fqySPkp35hJvA Password: whlp说完，往床上一倒，将双手枕在脑后，口中默念早些回来，早些回来。