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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.May you be strong enough not to be spoiled or hurt.罗思拉（Kelly Sheridan 配音）天真可爱善良迷人，一场可怕的海难之中，她成为了幸存者流落到了一座荒岛之上还失了忆，险恶的环境之下，一直以来衣食无忧的罗思拉能够生存下去吗？幸运的是，这座岛上居住了一群友善的动物朋友们，在小熊猫、大象宝宝和孔雀的帮助之下，罗思拉生活的很快乐。众峨眉弟子亦是面沉如水，而峨眉弟子中有一人却是最为尴尬，那就是唯一拿着剑的周芷若。3. Return-MASTERDOWN error.中医世家艾真堂堂主夫妇双双遇难，留下女儿秦芝艾继续行医救人，意外救治了不死傀孟宗竹。孟宗竹身怀秘密来到医馆调查云诗夫妇死因，利用不死傀身份控制小医仙成为她的主人。从此二人一起行走江湖悬壶济世，还卷入了一系列朝堂纷争。最终云诗夫妇死因真相大白，秦芝艾也凭借高超的医术成功救治了皇帝，成为御赐“小医仙儿”。传说中隐藏着绝世武学的“翡翠娃娃”重现江湖，掀起一场争夺战。长风镖局的少主郭旭，为了借“翡翠娃娃”上记栽的医学宝典，替两代世交云家庄的云五少爷治疗宿疾，宁冒天下之大不讳，在霹雳飞刀封平，快剑辛力及程铁衣，程采玉兄妹协助下，护送“翡翠娃娃”前往云家庄。 　　保镖途中，有官府的锦衣卫指挥使翁泰北，名门正派少林、华山、青城以及邪恶的天下第一帮天幽帮、四川唐门、七星堡等等各路黑白人物明抢暗夺，又有性烈如火、情痴若狂的血手胭脂的纠缠。多情多义的风流少侠郭旭，如何将这趟镖送到目的地呢？