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If I were to implement a pizza ordering system, I would definitely write the code like this, because this kind of code can be written subconsciously without consuming our brains. However, take a closer look at this code: the purpose of this method is to order pizza. However, the code for ordering pizza also needs knowledge about the production of pizza. This method must know all pizza. Worse still, if the types of pizza are to be expanded or pizza with poor sales volume are to be deleted in the future, then the code for ordering pizza will be modified. It looks very bad and should be revised. Our first step must be to separate the code for producing Pizza from the code for ordering pizza, because you should not let the code for ordering Pizza know the logic for producing pizza, but should hand over the logic for producing Pizza to a special type. In this way, we can cope with future changes-if we want to add or delete pizza, we can directly modify the producer of pizza without affecting the logic of ordering pizza.颜值颇高的 江寒 是一名怀揣音乐梦想的康复科男护士。在医院，体贴温暖的江寒经常遭受患者的“骚扰”。但他们不知道江寒乖乖男的外表背后，还藏着一个叛逆不羁的灵魂。江寒生活中最大的乐趣，就是周末下班后去酒吧驻唱，释放压力的同时，维系自己的音乐梦想。一天下班后，江寒在酒吧遇到了一个喝醉酒抢话筒的女生—— 夏天 ，江寒立刻被这个任性大胆的女生吸引。不料第二天，夏天就作为实习护士来到江寒所在康复科实习，她的到来给江寒的生活带来了翻天覆地的变化。 在工作与梦想层层考验和挑战之下，江寒和夏天两人一起对抗毒舌难搞的护士长 张尔晴 ，也收获了同样拥有音乐梦想的面瘫高冷男主唱 周子翼 的友情 。三人在追梦的路上跌跌撞撞，收获爱情与成长。《邪恶》讲述抱怀疑论的女临床心理学家与一名受训中的牧师及一名蓝领承包商组成团体，他们会共同调查一些奇迹﹑附魔或其他超自然事件究竟能否用科学解释，还是真正的超自然现象。周菡诧异地打量这少年：十五六岁年纪，身着灰色粗布长衫，长相清秀，没什么出奇的呀，就是眼睛特别灵活。2018-03-04 16:41:14对他们而言，除了梆、州比彭城艰苦一些，其他的似乎并无差别。舜、禹、汤、文、武都是圣人，也没有谁能长生不死。