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23. Chain of responsibility model= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =如何改？弃火绳，改遂发。　　在魔术产生盛行的维多利亚时期，出现了两位极有天赋的年轻魔术师，最为难得的是，他们还是一起长大的好友：罗伯特·安吉尔性格复杂而且历练世故，是一名天生的表演家，他知道如何在舞台上将自己完美地展现给观众。苏颜（黄姵嘉 饰）是一个看似活泼开朗，但其实内心有些自卑的女生，因不愿敞开心扉，曾经和家人、朋友发生了很多误会与矛盾，在男友陆瑾瑜（陈玺安 饰）的关爱和照顾下，在结婚前夕她决定以邮件的方式向亲朋好友吐露心声，揭开所有隐藏的真相，这封密码信也开启了他们对曾经那段青春往事的回忆，然而一场车祸却在此时不期而至……此剧讲述四个正处于七顚八起状态的年轻人在职场上奋斗，和与他们家人之间相处的故事。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: