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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.那是先生还不知我要种什么。赵盘看着项少龙，神情又惊又喜，最后眼神变得坚定不移。Lawyer Yi talked about a case he had done:在静谧的黑暗森林边缘，有一个不知名的村庄，长久以来，关于狼人的各种传闻在这里广为流传。美丽的少女瓦莱丽（阿曼达·赛弗里德饰）已到成婚之年，家人把她许配给了村子里有钱人家的儿子亨利（麦克斯·艾恩斯饰），然而瓦莱丽真心爱着的却是与自己青梅竹马的樵夫彼德（希罗·费南德兹饰）。为了追求真爱，瓦莱丽和彼德决定私奔。然而正当他们计划逃走之时，狼人出现并杀死了瓦莱丽的妹妹。村民们长久的积怨终于在这一刻爆发，他们决定要铲除威胁村民的狼人。残酷的战斗之后，村民们在一座山洞里杀死了一只巨狼。然而山洞中的巨狼并不是传说中的狼人，真正的狼人其实一直隐藏在村民之中……本片由《暮光之城：暮色》的女导演凯瑟琳·哈德威克执导，惊悚片《孤儿》的编剧大卫·约翰森负责剧本改编。浓郁的哥特风格和大量的黑暗元素让人对此片印象深刻。戏子们演得绘声绘色，老太太看得眉开眼笑，对儿子儿媳妇道：我就喜欢看这个，比唱戏容易懂。