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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.An Advanced Experiment Tried by Yourself-Random Attack by Bypassing Address若是你们把这一茬熬过去了，从此后，就能一飞冲天。小兄弟是哪家的？ show_style();。PREROUTING, FORWARD, POSTROUTING说话间。　　金炳哲饰演善闵植，他是监-狱医疗课长，是一个有着精英选民意识的课长。他家族的医疗界族谱可以追溯到已经过世的爷爷那辈，父亲的三兄弟也都是医生，因为父母的关系，大家都认为他早就预定了大学教授之位，但其实并不是。虽然自尊心很强，但实力跟不上，总是落后于同期们。