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Good stickerEach 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.No. 69 Yaya一天，小咕提出想回家和伙伴们在一起。康一为了让小咕了解外面的世界，悄悄把它带了出去。小咕发现环境已经面目全非，大吃了一惊，这个不适合就河童生存的地方根本就找不到伙伴。看到小咕难过，康一也不好受。他和小咕一起外出旅行，来到了还保存着河童传说的远野县。两人在美丽的大自然中找到了适合河童生活的地方，小咕愉快地在清澈的河里游了起来，康一也为它高兴。可是，在这里也怎么都找不到其它河童。康一听到村民们说“抓住一只河童能得一千万呢！”，赶忙带着小咕离开了那里。在身患“渐冻人症”的城市速写画家马赛克（王祖蓝 饰）眼中，人和物都在“渐冻”，他需要在病情彻底恶化前收集一些快乐的回忆，自小暗恋小学同学神仙鱼（蔡卓妍 饰）的他终于拿出勇气，提出一个遗愿：“给我一天，当我的女朋友，可以吗？”陈启，你一定要教我国术。