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Proxy mode refers to providing a proxy to an object and controlling access to the original object by the proxy object. The specific structure diagram is shown below.Except that the number of operation points is already 0.可她身为一国公主，到底不凡。第二天早饭后，大校场东南聚集了许多人，正前方的平台上，何风亲自压阵，观看黎章和卫江较量比试。Javascript neither supports abstract classes nor has the concept of interfaces. Therefore, be very careful when using the state mode. If you forget to implement the buttonWasPressed method for a state subclass when writing a state subclass, an exception will be thrown when the state switches. Because Context always delegates requests to the buttonWasPressed method of the state object. Therefore, let the abstract method of the abstract parent class throw an exception directly, which will be found at least during the program run.该剧主要讲述男主人公肖逸、吴信、尹正风三人因死神失误被录入死亡名单，死神邀请其成为守灵人，只要协助死神拯救将死者待死亡系统恢复正常三人即可重生。故肖逸三人想方设法拯救错误录入死亡系统中的将死者，在不断救人的过程中，三人也愈发感受到生命的美好，心智在不断成长的故事。