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3. The state switching is not obvious, only the state variable is assigned, such as this.state = 'weakLight'. In actual development, such operations are easily missed by programmers. There is no way to clearly understand how many states there are in the light unless you patiently read all the code in the buttonWasPressed method. When there are many kinds of states, the process of a switch seems to be buried in a dark corner of a huge method.从来都不被期待的无名高中吹奏乐部，在一名教师的指导下，以全国顶点的“音乐甲子园”为目标演奏出灵魂的合奏。有些梦一个人无法完成，有些喜悦需要有人分享，这是一个超越时代界限，直击人心的故事。1939年11月，日军登陆钦州，被炮火震昏的守军连长莫辛烈被部下抬出阵地，却被军方以逃兵论处执行死刑，共产党员学生军队长武少雄获悉原委后，当即召集民众找到国军高级将领白主任游说将其保释。莫辛烈为了赎罪，决定组建宾阳民众抗日敢死队。在武少雄率领的学生军协助下，他们深入敌后救出国军飞行员、铲除日军和土匪组成的刺杀队、指挥炮兵炸死日军少将中村正雄，完成个人的救赎。在武少雄的感召下，莫辛烈幡然醒悟，面对侵略者需要完成的不是个人救赎而是拯救危难中的国家和民族。正当敢死队冲出日军封锁摆脱危险载誉归来时，昆仑关战役打响，莫辛烈、武少雄毅然决定配合国军里应外合攻克昆仑关，惨烈的战斗中武少雄等学生军血洒疆场，莫辛烈将胜利的旗帜插在昆仑关上。OvR has the advantages of fewer classifiers, less storage overhead and less test time than OvO. The disadvantage is that when there are many categories, the training time is long.怕是有专门的衙门管这事。下更晚八点。