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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.振臂提枪。《老婆这周要出墙》讲述了在大学时便坠入爱河的陶贤宇（李善均饰）与郑秀妍（宋智孝饰）即使结婚8年依然过着幸福美满的婚姻生活，但陶贤宇却在偶然间得知妻子将在三天后出轨，完美的超级妈妈郑秀妍将与深爱着她的陶贤宇之间发生怎样的故事，令人好奇不已以报社为背景的喜剧，由三十年代的四大巨星威廉．鲍华、莫娜．罗拉、斯潘塞．特蕾西、琪恩．哈洛联手主演，故事描述报社编辑利用他的未婚妻和前任记者去实施美男计好让一名富豪的女继承人放弃控告报社诽谤罪，不料计划走了样，……搞得好不热闹。全片剧情峰回路转，从头至尾的发展都捉住观众的注意力，导演杰克．康威尔也拍得流畅而紧凑，让四位大明星都有大展演技的机会，因而制造出相当高的喜趣效果。BeijingFigure 2