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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.《心动警报》改编自同名网络小说，讲述经常被女人倒追、具有致命吸引力的皮肤科院长“车宇轩”（千正明饰）和人气明星“尹宥静”（尹恩惠饰）之间发生的合约恋爱故事。在这个统一的国家里，就不会再有诸侯国为了土地和利益而大打出手的现象，大一统的形势下，战争自然而然地就减少了，百姓们比乱世生活的更好，受到的伤害也就更小。来自世界各地的十名热辣单身者齐聚在热带天堂，这群年轻人认为这将是他们生命中最具异国情调和最性感的夏天，但转折不约而至。如果想要赢得 10 万美元的大奖，这些喜欢随意约会的承诺恐惧症患者在整个过程中都不得有任何耍花招的行为。没有亲吻，没有爱抚，没有任何形式的自我满足。每僭越一次，奖金就会随之减少。在这个奢侈的禁欲区，热衷单身的人能够建立更深的情感联系吗？还是诱惑太过强烈，让人无法自持？　　主角龙皓晨，为救母加入六大圣殿之一的骑士圣殿成为一名骑士，在一步步成长冒险中，奇遇，诡计，命运般的爱情与友情不断在他身上上演。龙皓晨坚守骑士精神，通过自己的人格与努力，赢得他人认可。他先是与六大圣殿其他天才少年组成“1号猎魔团”对抗魔族，为人类的生存与尊严奋战。同时不惜献出生命，守护自己的伙伴与最珍贵的爱人。而世界的局势变化难测，更多的阴谋在酝酿，更深的秘密也等着他却揭开。在阳光下身影镀着与这个小镇同样的金色，亲密得没有间隙。想起曾经自己也和一个男孩这么的亲密，她想自己是不是太胆小了。在一个广场上传来了一首小提琴曲路非一眼就看到了辛辰，辛辰轻声说我爱你，路非。