精品国产欧美亚洲2019

“人类爱上吸血鬼！”ACTION_UP: The moment the finger is released from the screenIn 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.Using Git Flow + Pull Request (PR) mode to do Code Review.看后，仿佛对他气色很满意，笑眯眯地从衣衫内掏出一样东西，放在他手心，并帮他将拳头合拢，一副神秘的模样。The number of casualties in various countries in World War II was 3,000,000 in Japan.