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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.Public class Memento {他只想好好领兵，好好打仗的，为什么要搞得这么复杂。科学家艾莉·爱罗薇从小就对外太空感兴趣，并用无线电接收其他地域和空间的信号。长大后，她成了一名从事外太空生命搜索的专家。她对宇宙生命充满探索欲望，尤其是对她产生深远影响的父亲去世后，她对科研的投入更加上了对父亲的强烈怀念。寒暄一阵，张槐让板栗和葫芦出去，把给各亲友带回来的土产节礼等物事搬进来，一一分派，另有两大车是张家自己的，叫刘黑皮先送回桃花谷去了。马修·奥布里（Dagenham制造，美国福音），英国电影学院获奖女演员西安·菲利普斯夫人，主持人兼演员肖恩·弗莱彻也加入了演员阵容。