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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.《来的都是客》讲述的是曾在城里打工的姑娘回到家乡，自己当老板开了一家现代化酒店，招募老乡来打工后，各色人等幽默登场，有作家、兽医、考古队员、农民企业家、逃婚的网络红人等等，于是发生了一系列啼笑皆非的故事。5. "Ring lamp" means a signal lamp that displays uninterrupted lights within a 360-degree horizontal arc.然后装进一个细长扁木匣。放羊娃铁柱（田娃 饰）在中国时尚达人秀节目中脱颖而出。被人和演艺公司总裁范娱乐（刘桦 饰）看中并着力培养，且送他出国深造。铁柱在音乐学博士隋晓菲（黄圣依 饰）的引荐下，得到英国著名音乐教授的指导。同时，他与隋晓菲也建立起了一种奇妙的感情。学成归国后的铁柱将有机会和世界巨星VITAS（维塔斯 Vitas 饰）及意大利版苏珊大妈玛索拉（卡门·玛索拉 Carmen Masola 饰）同台献艺，但是他质朴的情怀却和娱乐圈格格不入，使得他走上了一条极为坎坷的成名之路……编辑不过是被刘邦利用，没有好下场。