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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.In real life, there are many requests that cannot be made by one person. For example, the salary at the interview may be decided by the technical manager if it is less than 10,000, but the salary between 10,000 and 15,000 may not be approved by the technical manager and may need to be approved by the technical director.　　《警察遇到兵》这部戏主要分为三个单元，整个剧情不仅有着案件悬疑的精彩剧情，同时也有很多让人觉得温情感人的部分，孙逊饰演的“罗三拐”和秦海璐饰演的“罗妻”，两人都是非常善良并且极具同情心的人物，两人养育的四个孩子中，有两个孩子并非是自己亲身的，令原本就不富裕的两人负担变的更重，但是两人都没有放弃， “罗三拐”（孙逊饰）为此也更加努力，并且将自己也改造成为新中国合格的人民警察。当恶魔呼喊你的名字时》是以歌德的《浮士德》为模型，讲述十年来把灵魂卖给恶魔，少年得志、享受成功的明星作曲家为了延长合约，需要交给恶魔其他三个人的灵魂买卖合同，后发现自己拥有的财富和成功夺走了一个少女的才能和人生，让少女和自己、自己、周边的生活恢复，了解人生的精髓。以此展开的神秘人性故事。2019年7月底首播　　在新一季，Blanca Suárez、Ana Fernández、Nadia de Santiago和Ana Polvorosa所扮演的角色将在一个以提高妇女权利和自由为标志的时期经历日常生活中的改变。这不好？秦涛听了一愣，眨巴着大眼睛想了想，这话听着似乎有理，又总觉得有些不大对劲。