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Http://bbs.a9vg.com/forum.php? Mo... & page=6 # pid52710106Decorator mode is also called Wrapper mode, which can dynamically add some additional functions to an object. Decorator mode is more flexible than the way of inheriting and generating subclasses. Although decorator mode can dynamically attach responsibilities to objects, it will also cause some small objects to be generated, increasing the complexity of the system. The specific structure diagram is shown below.在民国六年，少年常满离开贫瘠家乡，远赴京城谋生。偶然下遇上前清掌管御厨的太监蒲公公（林尚武饰），蒲公公性格孤僻，却是烹调高手，常满跟他学艺并入玉家当下人。For example, the above is only a simple literal quantity structure. All member variables above are accessed through Singleton, but it is not a single mode. Because the monomer pattern has a more important feature, that is, it can be instantiated only once. The above is only a class that cannot be instantiated, so it is not a monomer pattern. Object literal quantity is one of the methods used to create a single pattern;(1) A simple and clear CAD manuscriptComparison of True and False Details