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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托马斯决定去挖掘一桩大新闻，深入战争地带报道一起大屠杀，以使自己能够继续留在越南。艾登追随他潜2. In the above example, a set of state objects are created for each Context object. In fact, these state objects can be shared, and each Context object can share one state object. This is also one of the application scenarios of the meta-sharing mode十九世纪中叶至二十世纪初的自贡，无疑是中国的庞贝城，亦是封建农业社会包围之中的一座手工业城市，其实中国的资本主义已有此地土生土长、生根发芽，发展得相当成熟。Number of casualties in major battlefields:本剧描述一个充满各种超能力者的世界，但这群人并没有用在正义，而是用在伤害他人，甚至谋杀；而警探Christian Walker (Sharlto Copley饰演) 及Deena Pilgrim (Susan Heyward饰演)被指派负责这类案件，并保护没超能力的平凡人。但是，好友菱形窗告诉慎平“潮之死有可疑之处，有他杀的可能性”。