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沈悯芮一声轻吟飘来：父母在，不远游，游必有方。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.丧偶的中年妇女马娟嫁给了同村也丧偶的中年男子王志新。原本是充满希望的新生活，却因王志新对家庭缺乏责任感、继子王卓对自己的抗拒，以及在省城投资开发公司工作的亲儿子王群因违规贷款东窗事发成为逃犯，让马娟陷入了深深的困境。但倔强的马娟始终不肯向命运低头，以超越常人的毅力和坚韧，用瘦弱的肩膀撑起了这个不同寻常的家。最终马娟温暖了王卓的内心，也让王群迷途知返，谱写了一曲母爱如山的赞歌。The eldest son of the Lins 01Expansion:Hello, landlord! I have not encountered such problems myself, and of course I have no experience. I have a website here that can be consulted. You can go and have a look, which may be helpful.当一个紧张的时间旅行痴迷的年轻科学家被他虚无主义的未来自我拜访时，他被告知他需要放弃成为世界上第一个时间旅行者的梦想，否则。但当他不同意这个计划时，这就变成了一场人类与自己之间的恶战。