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This series of articles is based on my speech on RSA 2018.县案首杨公子拿定了。只是刚刚感受，苏角变得大为喜欢。In the above code, we use three functions, order500, order200, orderNormal to handle its own business logic, If the current own function cannot handle things, We pass it to the following function to handle it. By analogy, Until there is a function that can handle him, Otherwise, the responsibility chain mode will leave the chain directly, telling that it cannot be processed and throwing an error prompt. Although the above code can be used as the responsibility chain mode, we can see from the above code that the Order500 function depends on functions such as Order200, so there must be this function, which also violates the open-closed principle in object-oriented. Let's continue to understand writing flexible and detachable responsibility chain nodes.故事开始于上世纪70年代末北方某农场，生性顽劣的干部子弟雷雷（邓超饰）邂逅被污破鞋的美丽女知青叶青儿（孙俪饰），两人不打不成交，开始一段两小无猜的纯洁友谊，由此暗生情愫，对邓丽君《甜蜜蜜》的共同喜爱使两人青涩的爱情开始萌动。本剧是东方今鸣高标准打造的一部全新精品电视剧，讲述了一段宫闱之争的秘史，既是一场刀光剑影，尔虞我诈的乱世江湖，又是一段腥风血雨的深宫谍影。史学家以及民间高人吹的最邪乎的情况，郑和旗舰的吨位为4.4万吨，这个数字与现实中刚刚下水的辽.宁.号航母相差无几，而郑和舰队的总吨位可以吹到200万吨，21世纪新中国海军总吨位满打满算也就是这个数字了。