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说实在话，那玩意买回去基本上就是摆设，陈启也不想捞铁杆粉丝的那一点钱。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.山顶终年积雪不化，远远看去如同冰雪神女，擎天而立。板栗和葫芦对视一眼，都茫然——当时他们都只顾香荽去了，依稀看见许多少女伏在窗前，也不好细瞧，也没心思打量。An untraceable group of elite bank robbers is chased by a suicidal FBI Agent who uncovers a deeper purpose behind the robbery-homicides.看着魏豹一副讪笑的嘴脸，尹旭不禁满身鸡皮疙瘩，从第一次见面，尹旭对这厮便心生反感。　　于是哈金斯组织了一群非常有篮球天分的黑人学生作为西德州联队的核心，开始了他艰苦的光荣之路。这些黑人球员连真正的篮球与街球的区别都不知道，而且他们对种族问题极度敏感，可是这些内部问题与外部的大环境相比根本算不得什么，整个学校的人从上到下都认为哈金斯疯了。