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张大栓也急忙道：板栗，你可不能丢下爷爷。宋义还冠冕堂皇地送来请函，尹旭眉头大皱，借口推辞了。10,000 Yuan Zhao Xiaojuan Sells Carrefour Editor Ya Han XiangThe observer mode defines a one-to-many dependency relationship, allowing multiple observer objects to monitor a certain topic object at the same time. When the state of this topic object changes, all observer objects will be notified so that they can automatically update their behaviors. The specific structure diagram is as follows:I finally failed to complete the 10 speech goals required by CC (Competent Communication) in half a year. Instead, I completed it in one year and completed CL (Competent Leadership) simultaneously. In the middle, I witnessed three official elections and the coming and going of members. The people I met at the first time I attended the first horse meeting are now few and far between.讲述天上财神欧阳震华坚持金钱在凡间是万能，更与相信“情比金坚”的寿星公打赌，要改变凡人杨西。You can see that PizzaStore depends on a SImpleFactory, which depends on an abstract pizza. Under normal circumstances, to decouple, control inversion is required. The core idea of control inversion is that neither the upper structure nor the lower structure depends on implementation, but on abstraction.