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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.板栗想起周家那些叔伯，遂平静下来，微笑道：是我眼界窄了。10. The one-dollar hot pot only takes 2 minutes from ordering to dining, paying more attention to the concept of time and making it more convenient.咦？她怎么来这了？是来找我的吗？程小明用手整理一下头发，说道。众兄弟姊妹都点头答应。6.4. 1? SYN? Generation of cookies公元464年，刘子业即位，凶残暴戾，同母姐山阴公主刘楚玉，淫乐无度，门第无数。江湖第一帮派天机楼，欲推翻刘子业暴政，派长相酷似公主的女弟子楚玉，执行天机楼的命令，扶持刘彧新政。楚玉来到公主府，一边假装暴戾淫乱，一边培养心腹。并与门客容止相识，面对容止的帮助，楚玉暗生情愫。最后天机楼帮助刘彧夺位成功，刘子业被杀，真正的山阴也在叛乱中死去。虽然暴政被除，但楚玉厌倦权谋，不想回天机楼。容止出手相救，带着楚玉来到邻国。在邻国楚玉知道容止竟然是北魏皇太后的亲信，为了夺取南朝政权，潜伏在公主府忍辱负重。楚玉向容止表达爱意，容止选择了江山，楚玉伤心离开。容止其实也对楚玉用情至深，面对楚玉的毅然离开，最终还是选择楚玉，假扮观沧海，两人邻里而居。