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香荽忙起身说请进。洪霖眼光闪了闪，道：那你先进去通报好了，我们落后一步，去拜见老太太。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.Creating subscribers takes some time and memory.黄豆在一旁听着，也呆愣半响，见大家都不吱声，忙咳嗽一声道：还请邱公公展开糊名。　　由于闵寿楠与竺自臻所热衷的经营思路不同，终归分道扬镳——闵寿楠继续以传统的思路开着老滇马店；而竺自臻则远渡重洋，有成而归，以开阔的思路，在昆明创建了专营洋货的南洋货栈。