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State mode refers to allowing an object to change its behavior when its internal state changes. The object seems to have modified its class. Divide this sentence into two parts by commas. The first part means to encapsulate the state into a separate class and delegate the request to the current state object. When the internal state of the object changes, different behavior changes will be brought about. The second part is from the customer's point of view, the object used has completely different behaviors in different states. The object seems to be instantiated from different classes, but in fact this is the effect of using delegates.在我眼中，司马二一直是一个令人敬佩的偶像，一座不可逾越的高山。正准备着，方桂花忽然就冲了过去，那擀面杖舞得呼呼生风，毫不留情地砸在第一个靖军肩膀上，脚底下也没闲着，跟柱石般的胖腿一个横扫，那靖军就趴下了。　　闫护士长有些女强人的性格，精力旺盛，工作能力强。刀子嘴、豆腐心，也有点婆婆妈妈，爱给人介绍对象，爱买便宜东西。在爱情的选择上要求很高，对露西亚娜曾为一位著名小说家工作，她确信家人的悲惨死亡由此人一手策划，于是求助一名记者揭露事情的真相。板栗被洪霖一甩之下，震得蹬蹬后退两步，心中骇然，才要鼓劲上前与赵锋双战洪霖，却听一声大喝：住手。Add a method called set_number_served (), which allows you to set the number of people to eat. Call this method and pass a value to it, then print the value again.