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In the previous example of electric lights, a state mode program was completed. First, the Light class is defined, which is also called Context here. Then in Light's constructor, to create instance objects for each state class, Context will hold references to these state objects in order to delegate the request to the state objects. The user's request, that is, the action of clicking button, is also implemented in Context, with the following code:Tristin Mays饰演常规角色Riley Davis，她是个带怨恨﹑不可预测的电脑骇客，脑子有着各种计算机编码的知识；原本她在狱中服刑，因此她更是乐意在MacGyver的队伍中工作，而不是留在监狱……不过她懒得表示谢意。Judgment: The old man gave you a disdainful look.(2) Initiation Dispatcher will require each event handler to pass an internal Handle to it. The Handle identifies the event handler to the operating system.Joe, beloved choir teacher, discusses topics of interest. First up, iron!这对周浩和周家而言都是个大好的机会，所以周浩立即带了许多的人马前来会稽山中追寻徐彤。