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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.这次若不是小葱，皇帝和太后也等不急葫芦和赵锋带军来救驾，因此，她的功劳绝非旁人可比，偏又不能封爵加官，只得赐了一所豪宅做将军府。Ten Thousand Years of HelloWorld对于这类问题，他们自小被家人考问多次，最是熟练了，如今能回答的滴水不漏，一个亲人也不得罪。1942年5月，华北日军发动“五一大扫荡”，对我冀中军区根据地进行“铁壁合围”。八路军某部侦察队长刘汉带队，由山中猎户出身的李家兄弟等人作为向导，在护送机要员魏先生前往冀中军区的途中遭遇日军扫荡部队，被迫分头潜入安定县城，却在县城联络点被特务队伏击。负伤的刘汉被洪大宝所救，在妇救会长王玉兰帮助下得到上级的命令，伤愈后留在安定地区建立敌后武工队，打击日寇。刘汉在进步青年钟婷婷，猎户出身的李元杰，抗日救国军的郑二宝等人的帮助下，与安定县城的日军展开了斗智斗勇的战斗，他们灵活机智，运用各种手段打击日寇，队伍也在对日战斗中得到成长，成为一把插在敌人胸口的刺刀，沉重地打击了日本侵略者的嚣张气焰，为即将到来的主力部队大反攻，收复安定县城奠定了基础，为取得抗日战争的最终胜利，做出了自己的一份贡献。Don't establish a direct loop between feedback and punishment. On the contrary, before making a decision, ensure that the authenticity of the evaluation feedback is evaluated and combined with other signals.　　皇