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范依兰嫣然一笑，父亲到底还是疼爱自己，当即说道：爹爹，越国那边有消息了。Is the comment clear enough to describe each subroutineNext, you will write various state classes. The light object is passed into the constructor of the state class. The state object also needs to hold a reference to the light object in order to call the method in the light or directly operate the light object:Yeah. . Support. Yeah. . Support. Yeah. . SupportLeave a message and take up a place ~The above code: We use a parameter FN to pass it in, and if there is an instance of result, we will return it directly. Otherwise, the current getInstance function calls FN, and this pointer points to this FN function. After that, the return is saved in the result. Now we can pass a function in, whether it is to create div or iframe. In short, if this is the case, we can use getInstance to get their instance objects.