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他那一本正经的神色令众人听了诧异不已。Adapter pattern of objects: When you want to convert an object into an object that meets another new interface, you can create a Wrapper class, hold an instance of the original class, and in the method of the Wrapper class, just call the method of the instance.因为按照这个协议，江南卫视稳赚不亏。他还想偷偷地告诉她，她跟紫茄比，一点也不逊色，另有一番可爱。The scenarios used in the command mode include: sometimes it is necessary to send a request to some objects, but I don't know who the recipient of the request is or what the operation of the request is. At this time, I hope to design the program code in a loosely coupled way; So that the request sender and the request receiver eliminate the coupling relationship in each other's codes.IT opportunities are worldwide. It has penetrated into every corner of the economy. It has also produced many job opportunities that have never appeared before. The development momentum is getting faster and faster. At the same time, it also means that its salary level is very high. They are absolutely competitive.Iterator mode: Pay attention to encapsulating changes in specific fields, support changes in collections, shield complex internal structures of collections objects, and provide transparent traversal of collections by client programs.