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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.圣丹斯电影节展映影片，Sarah Silverman主演。兰妮有着幸福的家庭，但她并不满足，利用偷情、吸毒、失踪等等来获得短暂的刺激和快感；当她努力想回到原来的生活，却发现并没有那么容易。讲述了面对着因时代的悲剧错误而造成的家族史痛苦，情比血浓的母女三人，却又发生着让人心碎的成长故事
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