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Structural patterns, as the name implies, discuss the structure of classes and objects and are mainly used to deal with the combination of classes or objects. It includes two types, one is class structure pattern, which refers to the combination of interfaces or implementations by inheritance mechanism. The second is the object structure mode, which refers to the realization of new functions by combining objects. It includes adapter mode, bridge mode, decorator mode, combination mode, appearance mode, element mode and agent mode.　　《我来自北京之按下葫芦起来梨》是由最高人民法院新闻局监制，北京市广播电视局指导，中国电视剧制作产业协会青年工作委员会组织，北京长信影视传媒有限公司出品，中共宁陵县委、宁陵县政府协摄，郭靖宇 监制，柏杉 执导，薛鑫、李梓逍担任总制片人，刘博担任制片人，李志超、刘雨畅编剧，杨志刚 、吕一 领衔主演，黑子 、张辉、魏子扬、郝明奇、裴兴雷 、顾靖 、马赫 、卢琳主演。　　该片以“脱贫攻坚战”这一伟大历史进程为故事背景，讲述最高人民法院扶贫干部在精准扶贫工作中的典型事迹。　　该片于2020年9月30日开机，全部场景均在宁陵县实景拍摄，影片在完成后期制作后，计划在12月4日“国家宪法日”首映。GBL Colossus　　由于三元一直忙碌工作，忽略了丈夫与儿女，丈夫程锋（魏俊杰 饰）开始时也是十分体谅的，但随后面对三元的变本加厉，夫妻俩只好分局收场。但他们在工作中还是有很多合作的机会，而他们的女儿正好在一次械劫案中被歹徒挟持做人质了，面对年幼的女儿，二人合力拯救了女儿。　　同时也将一个没有妖魔化、漫画化的蒋氏家族，栩栩如生地描绘给世人评说。尤其值得令人期待的是，该剧围绕国民党军统特务多次妄图刺杀毛泽东为情节线，从城南庄敌机偷袭到西柏坡投毒、从香山兵变到玉泉山刺杀、从先农坛暗杀到炮轰天安门……If there are too many specific values, I will not post them. Du Niang can easily search them.Visitor mode is to encapsulate some operations applied to a certain data structure. Once these operations need to be modified, the data structure that accepts this operation can be saved unchanged. Visitor mode is suitable for systems with relatively stable data structures. It reduces the coupling degree between data structures and operations acting on data structures, making the set of operations relatively free to change. The specific structure diagram is as follows: