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The reason why the logic for creating an object is put into a separate class is that it can be used by multiple clients. And separates the creation and use of objects. However, this design also has many defects. First of all, SimpleFactory is a specific class, so we must program for the implementation, making the system lose its flexibility in this respect. Second, if we add new products, we have to modify the code in SimpleFactory, which violates the opening and closing principle. The above model is also called simple factory. He does not appear in GOF mode, it is more like a programming habit.This is the difference between the thinking of the poor and the thinking of the rich: the thinking of the poor is characterized by living within our means, while the thinking of the rich is characterized by goal orientation.同欣药业是丹城市一家极有影响的民营企业。企业领导童欣和童钢姐弟经过多年努力，终于研制出一种以中草药为主要原料的抗癌新药，并得到国家有关方面高度重视，开始进入临床实验的关键阶段。然而，有人却在暗中打这个新药的主意，那就是辰宇制药的老板萧震南。他企图把童氏新药的配方搞到手，卖给国外一个黑社会性质的商社，以摆脱自己濒临破产的绝境。本剧一开头，他已重金收买了一个叫斯军的人去卧底，但由于童氏企业管理甚严，斯军尽管深受重用，最终仍是形迹败露，失事身亡。In 2012, when Osaka Weaving House opened its first store in a shopping center in a prosperous area, it attracted many customers with its young and fashionable positioning, outstanding Japanese style and the rare form of collection stores at that time.玉米的日子就精彩起来，因为。ID: The popularity rate of Five Supermen and Galo cars is getting higher and higher. Driver's license has become an essential skill in work and life. Subject 1 is the first level to obtain a driver's license. Many small partners who have done Subject 1 have deeply felt the routine of the questioner! One accidentally fell in! Therefore, Xiao Bian presents you with a complete set of examination skills for subject one today. You don't have to be afraid of these routines once you watch them!