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Netflix剧集《同妻俱乐部》获得第四季续订，《老友记》的菲比Lisa Kudrow将客串演出下一季。For safety. The memo should not be visible to the clientThe 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:最后求一下订阅，这一点订阅要不了多少钱，但是写手却要靠这订阅过日子。