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暂无剧情简介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.年近三十成绩平平的编剧萧渝（papi酱 饰）与同样才华无法变现的音乐人季野（张超 饰）意外成为合租室友，啼笑皆非的同居生活中，二人渐生情愫。现实打击梦想，但他俩相互陪伴，彼此鼓励。在或许不太好的今天苦中作乐，并坚信——明天会好的！20年前，为给女儿治病歌手汪璇耗尽积蓄，不得已听由经纪人孙锦盛将女儿送人收养，自己隐瞒实情结婚。婚礼当天汪璇逃婚寻女无果，女儿走失高烧失忆，被卡车司机姜卫国夫妇收养取名姜美丽，从此汪璇将全部母爱倾注在继女若琳身上。20年后，若琳做了歌手，在一次比赛中，与为支持妹妹而无意中参赛的快递员美丽成为对手。若琳一心想要追回的前男友制作人关毅爱上美丽，若琳要汪璇设法让美丽退赛，汪璇犹豫。而美丽的脱颖而出让梦想成名的妹妹美妍既高兴又失落，一向被美妍当作备胎男友的邻家大哥伟峰更被她发现其实真正关心的是姐姐美丽，美妍在若琳的挑拨下对美丽态度逆转。此时孙锦盛突然出现，汪璇追问女儿下落，锦盛说服美丽假扮女儿慰籍汪璇。汪璇决心帮助美丽，令若琳愤怒，更发现要失去自己一直不愿喊一声母亲的汪璇竟比要失去关毅更难以接受，汪璇在若琳与美丽之间左右为难。不忍欺骗的美丽坦白身份，汪璇伤心激愤，若琳要汪璇出手打击美丽。美丽决定退出竞争，离开关毅。余杭城内有个沈皮匠，生下一对孪生子，当晚却被蒙面人用一女婴掉包换走一个男婴。继而又是连遭追杀，只得隐姓埋名亡命天涯。皮匠一家不幸卷入一场残酷无情的宫廷阴谋之中，原来，当朝皇上虽有三宫六院七十二嫔妃，年过半百已连生二十六位公主，竟然未得一子。宁妃和凤妃两宫为争宠，谎奏已怀龙种。几番折腾后，宁妃却又生下了女儿，百般无奈只得将女儿用掉包计换来皮匠之子顶替。而凤妃却孕都没有怀上，只得抱来妹妹的儿子充数没想到十六年后却发生了一系列的事件　　60年代初，豫西山区的岭前村和岭后村有一条小河之隔，清水长流。岭前村的葛长生和岭后村的赵建国是同学好友，在参军之前，同一天双双结婚，又同一天在岭间河边别离了新婚妻子应征入伍。从此，葛长生的妻子周翠和赵建国的妻子叶秀也成了至亲姐妹。然而，参军到部队的葛长生与赵建国很快到了抗美援越的前线，在一次战斗中，聪明的建国为救长生负伤，流血不止，在生命的最后他把妻子叶秀托付给了年长于他葛长生，然后，敌人冲上来了，一切也就结束了。