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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.Can you imagine the tap water we drink every day, Binjiang Waterworks is only 1.1 kilometers away from the garbage incineration plant? !At the beginning of marriage, it must be beautiful and happy. Only in the process of marriage, both parties constantly hurt it, it will collapse.九一八事变前，日军进驻松花江畔的小镇，大肆清乡并屯、推行奴化教育。镇上的风云人物冯中岳、马万海率众进山，藏身于驻马岭。冯中岳、马万海虽然不敢公然与日军为敌，却也用尽方法与驻守的日军头领尾崎斗志斗勇，不断出奇招整治尾崎，打击日军的气焰。随后，在义勇军贺司令的感召下，冯、马两人率部加入东北抗联，协助主力部队炸毁军马场、阻截日军物资，大显抗日期间中国人民的智慧与团结。狡猾残忍的尾崎始终都没有停止追捕冯、马二人，在每次遭受两人的重创之后，便对中国百姓采取更加严酷的暴行。冯中岳、马万海虽然多次落入尾崎手中都巧妙逃脱，但两人一生挚爱的女人黑葡萄却为战胜尾崎献出了生命。最后，冯、马二人联手将尾崎彻底打垮，策马消失在白山黑水之间。HBO宣布续订《难以伺候》第二季，该喜剧讲述一个布鲁克林的大麻供应商，他为患上神经衰弱症的客户提供大麻。Ben Sinclair饰演「The Guy」，一位友好的大麻供应商，他的客户有着形形色色的人，剧中揭晓他们的生活。萧炎初入中州奇遇不断，实力一路高进。为寻找药老昔日挚友风闲，萧炎独闯四方阁大会脱颖而出震惊全场，风闲许诺定会全力协助萧炎营救药老。冰河谷垂涎厄难毒体疯狂追捕小医仙，萧炎怒歼对手双方结下不解之仇。冰河谷怀恨在心勾结魂殿大肆围攻萧炎，危急关头萧薰儿破空现身强势出手，携古族之威雷霆退敌，两人互诉衷肠后不舍暂别。丹会如期召开，萧炎力压一众竞争者荣获冠军。不料丹塔异宝三千焱炎火意外失控，萧炎力挽狂澜挫败魂殿计划，惊险降服火灵再添一大助力。药老被魂殿暗中转移至亡魂山分殿囚禁，萧炎不惧强敌立即集结人马抢攻，数轮恶斗后终于成功救出药老，师徒再度相聚但萧炎却付出巨大代价仅存一线生机。我只想说，这只是第一步，以后启明还会拍摄出更多的好电影，取得更好的成绩。