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如此重伤，现在还能活着真是奇迹。The template method pattern defines the algorithm skeleton in an operation in an abstract class and delays the implementation of some specific steps to subclasses. The template method enables subclasses to redefine specific steps of the algorithm without changing the structure of the algorithm, thus achieving the effect of reusing codes. The specific structure diagram is shown below.The general code is like this, and I feel that the code using the intermediary mode is similar, so I won't introduce it much here. The code in the book has advantages, but I don't feel that there is much difference, so I no longer use the intermediary mode to write code here. State mode is an unusually excellent mode, which may be the best way to solve some requirement scenarios. Although the state mode is not a simple to clear mode (it often brings about an increase in the amount of code), once you understand the essence of the state mode, you will certainly thank it for its incomparable benefits in the future. The key to the state mode is to distinguish the internal state of things. Changes in the internal state of things often bring about changes in the behavior of things. This article describes the state mode in detail在《行尸走肉第一季》中，人类社会发生了一场浩劫，大多数人都变成了僵尸，幸存者微乎其微。一个叫瑞克·格莱姆斯的普通警察在人类的“生存之路”上扮演了重要角色。瑞克在执行任务的过程中严重受伤，失去知觉。当他醒来后，发现四周到处是僵尸，家人和朋友都不见了。他在另两位幸存者的帮助下前往政府设立在亚特兰大城的“安全地带”，期望能找到家人。他的旅途显然不会轻松，因为幸存者面临的威胁不仅来自吃人的僵尸，还来自内部矛盾……Common protocols and their magnification:那个糙人，有什么好结交的？关键，不值得下这么重的礼。