欧美伊香蕉久久综合类网站

是的，月下现在很快乐。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.像黄观，前几天就回京了。至于价格，你不需要担心，我们出版社很有诚意。九斩修罗是一位来彼岸世界的灵妖，他在学校附近开了一家书店。表面上书店和平常书店并没有什么不同之处，其实书店是可以通往另一个世界的时空之门。老先生这次可是卯足了劲，上次西魏国的失败让他汗颜，分封诸侯的提议又被张良否决，最近在汉国之内可是颜面大失。入冷宫，失爱女，废后位……复仇暴君，冷心废后，她是他的皇后，却又是他最想除去的人；她是他的屈辱，他又是她的夙怨。破茧重生，弃情绝爱，她载恨华丽归来。几番对决，她笑言：“只差一步，可惜，你爱上了我！”多番较量，他怒称：“修罗地狱，也要你相伴左右