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Before decorator!Further: The factory method is used to process the creation of objects and delay the implementation of this creation of objects to subclasses, so that the code about the base class in the customer code is decoupled from the subclass object creation code.The policy mode is the packaging of the algorithm, which separates the responsibility of using the algorithm from the algorithm itself and delegates it to different objects. Policy patterns usually wrap a series of algorithms into a series of policy classes. To encapsulate the policy pattern in one sentence is to "encapsulate each algorithm into a different policy class so that they can be interchanged". The following is the structure diagram of the policy mode:香荽却自顾自道：你们知道自己抓的是谁吗？虽然我家是被皇帝判了流放，我家也不是一般人家。苏波荣（王祖蓝 饰）觉得自己的人生陷入了低谷。事业上，他饱受自私自利的老板马上发（许冠文 饰）的排挤和算计，工作多年亦看不见出头之日。亲情上，好吃懒做的母亲（元秋 饰）只将苏波荣当做是赚钱的工具，自打儿子十六岁起，母亲便过起了靠儿子养活的逍遥日子。友情中，好友华帝（方力申 饰）成天在外惹是生非，苏波荣往往就是帮他收拾烂摊子的那个不二人选。UK: 908,000