久久草

Flight MH370 was carrying 227 passengers (153 from mainland China and 1 from Taiwan) and 12 crew members. All 239 passengers and crew on board were killed.一直以来，小雨燕都把自己当做海鸥。逐渐成长的过程中，他发现自己并不会像海鸥一样飞。震惊之余，它离家出走了。这个过程中它遇到了自己的同类，并认识到自己的真正身份。在雨燕和海鸥家族面临一场巨大灾难时，小雨燕挺身而出，成为英雄　　死去的笃志竟穿越回高中时代，在确认周遭的一切后，他意识到自己的时代来临，利用已知的未来的知识，笃志靠赌马赚取大把金钱，拯救了自杀的朋友，考取了一流的名校，一转成为举世瞩目的天才青年。//Delete Child Node嗯……杨长帆思索过后说道，明白了。在美洲安家落户的确是一个巨大的机遇，同样也会产生巨大的混乱。Each object has its corresponding state, and each state corresponds to some corresponding behaviors. If an object has multiple states, there will be many behaviors. Then the judgment of these states and the behavior completed according to the states will lead to multiple conditional statements, and if a new state is added, the existing code needs to be changed. This kind of design obviously violates the principle of opening and closing, and the state mode is used to solve such problems.