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The following procedure is to use the state mode to improve the light. When it comes to encapsulation, the behavior of the encapsulated object is generally preferred over the state of the object. But the opposite is true in state mode, The key to the state mode is to encapsulate each state of the thing into a separate class, and the behaviors related to this state are encapsulated inside this class, so when button is pressed, only the request needs to be delegated to the current state object in the context, and the state object will be responsible for rendering its own behaviors. At the same time, the state switching rules can be distributed in the state classes in advance, thus effectively eliminating a large number of conditional branch statements that originally existed.翟金棠‧气势如虹问鼎上海黑白两道Episode 32这一切看着都很好，也确实很好。尹旭淡淡一句，立即让周大和陆明心惊胆颤。　　一切看似从未发生，一切仿佛无人知晓。但这只是一系列恐怖事件的开始。此后不久，一种神秘致命病毒开始在濒临崩溃的医院内传播…NTP (Network Time Protocol) is a common protocol used to provide time synchronization services. It is a typical UDP-based protocol, which is quite old and did not consider authentication in the original design, so it is an ideal hacker to use.