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Let's understand such a problem first, If our front-end development needs are the needs given to us by the demand side, It is possible that a front-end developer will deal with multiple demanders, Therefore, it will keep in touch with multiple demand parties. Then in the program it means keeping references to multiple objects, The larger the program, There will be more and more objects, The relationship between them will become more and more complicated. Now if there is an intermediary (if it is our supervisor) to meet the needs of multiple demanders, Then the demander only needs to give all the requirements to our supervisor, who will assign tasks to us according to our workload in turn. In this way, our front-end development does not need to contact with multiple business parties, we only need to contact our supervisor (i.e. Intermediary), which weakens the coupling between objects.在看清形势后，沙加路制定了东海养狮策略，与东海交好，缓慢的麻痹他们，直到自己的力量成长到可以与这只狮子一较高下再谈武力。The adapter for the interface is as follows: Sometimes we write an interface with multiple abstract methods, When we write the implementation class for the interface, All methods of the interface must be implemented, This is obviously wasteful at times, Because not all methods are what we need, Sometimes only a few are needed, In order to solve this problem here, we have introduced the adapter mode of the interface. With the help of an abstract class, the abstract class implements the interface and all methods. However, we do not deal with the original interface, but only get in touch with the abstract class, so we write a class, inherit the abstract class and rewrite the methods we need. Take a look at the class diagram:两个性格迥异的女孩因为一次青春的叛逆结缘，陆可和沈思怡成为了彼此最重要的朋友。但因为沈思怡霸道无理的性格，两个女孩在高考后的夏天彻底断交，沈思怡远赴国外。金国大王子向宋徽宗提出和亲，他离开汴梁时他恰巧遇到出逃的公主，把她当成了小宫女，对她暗生情愫。金国明为和亲，真实的目的却是要杀掉公主破坏和亲引发战争。大王子派人追杀公主，却不知公主正是自己心爱的那个小宫女。公主出逃后遇到了一个小郎中，没有想到小郎中竟然是金国的二王子。大宋公主和两个金国王子陷入了一段三角恋情。　　平凡的日子却没能持续太久，一次，头上不小心撞了个包的格鲁吉亚在检查中被诊断为不治之症，医生断言她仅仅能再活3个星期！就是如此，不愿意再庸庸碌碌过完自己仅剩得不多的几个星期，格鲁吉亚辞去了工作，取光了存款，直