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MR·LU是一个享誉全港的私家侦探，帅气、睿智、身手矫捷且善于应用高科技手段。他的破案率很高，来找他的客户也很多，只是他接受的案件，却往往与“灵异”有关……前方高能！被警察事业耽误的演员来了！江苏常州新北公安分局制作《民警李建国》系列短剧，人物设定暂定四人，分别是派出所教导员，民警李建国，警花黄淑芬，民警王钢蛋...均由基层一线的民警辅警出演。布鲁克林最大公立高中的五名学生为了成功、生存、挣脱枷锁并抓住未来而奋斗。与此同时，他们还要应对一个混乱的世界。We can see the above code; Player-to-player coupling code has been removed, However, all logical operations are put into the intermediary object for processing. Any operation of a certain player does not need to traverse to notify other players, but only needs to send a message to the intermediary. The intermediary processes the message after receiving it, and after processing the message, the processing result will be fed back to other player objects. The intermediary mode is used to remove the coupling code between objects. Make the program more flexible.Ouyang Kerui, employee of Guangzhou Branch of China Tower Co., Ltd.: We are working to meet the needs of the three major operators in the early stage of infrastructure construction. We can use time to say that we are racing against time.One problem with the factory method pattern is that the creation of the class depends on the factory class, that is to say, if you want to expand the program, you must modify the factory class, which violates the closure principle. Therefore, from the design point of view, there are certain problems, how to solve them? We use the abstract factory mode to create multiple factory classes, so that once new functions need to be added, we can directly add new factory classes without modifying the previous code. Because the abstract factory is not very easy to understand, let's look at the diagram first, and then it is easier to understand with the code.4. Browser: IE5.5 or above (IE6.0 is recommended).