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Next, we will enter the code writing phase of the state mode. First, we will define three state classes, namely offLightState, WeakLightState and strongLightState. All three classes have a prototype method buttonWasPressed, which represents the behavior that will occur when the button is pressed in their respective states. The code is as follows:《操作》讲述了在这个颠倒真相的世界，想要揭露真相的检察官和记者的故事。Therefore, operators must support their selected frequency bands and some selected roaming bands; Terminal suppliers, on the other hand, tend to provide a small but diversified number of terminal products to increase their sales. This will lead to an increase in the demand for band support. Another result is that the use of frequency bands does not require reliance on Radio Frequency Access Technology (RAT), but the radio must still be able to identify various RATs used and take corresponding actions.I nodded and motioned for him to talk about the battle. Zhang Xiaobo coughed lightly, cleared his throat and began to say:但真正平步青云的，可能是任何人，但绝不是你我，绝不是。　　雾山和三日月在一堆失了时效的案件中，揪出了一些谜点，与那些犯人周旋，然后展开了别样的推理故事。伴随着各种冷笑话，最脱力系的推理故事就此开始。