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The third adapter mode is the adapter mode of the interface, 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:明军将士疲惫至极，眼见鬼倭如此嚣张，终有年轻将领请命出击，然而张时彻却一一驳回，坚持死守。Iterative sub-patterns: Iterative sub-patterns can sequentially access elements in an aggregation without exposing the internal appearance of the aggregation. The aggregation of multiple objects is called aggregation. Aggregation objects are container objects that can contain a group of objects. Iterative subpatterns encapsulate iterative logic into a separate subobject, thus separating it from the aggregation itself. Iterative subpatterns simplify the aggregated interface. Each aggregated object can have one or more iterative subobjects, and the iterative states of each iterative subobject can be independent of each other. Iterative algorithms can be independent of aggregation role changes.珍爱的传家古董如有破损，损失的远不仅仅是金钱，更重要的是对先祖对家人的怀念。英国乡间的修理店修补古老物件，每件旧物后面都有一个感人的亲情故事。On personal computers, there are five most commonly used operating systems: DOS, Windows, Unix/Xenix, and OS/2. DOS System-In the 17 years since its inception in 1981, DOS has undergone 7 major version upgrades, from version 1.0 to version 7.0 now, continuously improving and perfecting. Windows System-Windows is the first generation of window visual interface published by Microsoft in November 1985, which makes PC enter the so-called GUI (Graphical User Interface) stage. Unix system. Unix systems were initially used on small and medium-sized computers. Unix is a multi-user system, which generally requires more than 8M of memory and a large capacity of hard disk. Linux system-Linux is the largest free software in the world at present. It is an operating system with functions comparable to UNIX and Windows and has complete network functions.我叫吕馨，这次多谢你了，我的包里有一些对我挺重要的东西，要是丢了的话，就可惜了。(2) Electromagnetic time relay has short delay time (0.3 ~ 1.6 s), but its structure is relatively simple and is usually used in power failure delay occasions and DC circuits.