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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.都市情感治愈偶像剧《浅情人不知》 根据人气作家师小札同名小说改编 导演:蔡聪 代表作:《想看你微笑》《翻身姐妹》《囧女翻身之嗨如花》 编剧:虢爽 代表作:《亲爱的她们》《调皮王妃》《等你爱我》《幸福从天而降》《百变五侠之我是大明星》《暖爱》 总制片人:许文俊 代表作:《飞刀又见飞刀》 《青天降妖录》《面包树上的女人》《大约是爱》 造型指导:陈雅雯 代表作:《噗通噗通我爱你》《御厨大作战》《我喜欢你，你知道吗》《大约是爱》 美术指导:张世明 代表作:《一起来看流星雨》《蜗居》《王贵与安娜》《如影随心》 开机时间:2018年7月底 拍摄地点:安徽合肥 拍摄周期:100天 出品公司:安徽广播电视台、安徽华星传媒投资有限公司、剧浪影视传媒有限公司、强盛(上海)多媒体有限公司A professional brokerage firm can make you get twice the result with half the effort. Including resources, experience, technology, etc.可是徽王府貌似并不讲这个道理，要么不出兵，一出就是灭国的兵。因而除因为儿子给杨继盛收尸的王忬倒霉外，北方将领日子虽然苦，脑袋却还能保住。在官场打滚久了。At the Shanghai Microsatellite Engineering Center, Li Qiang also expressed a similar meaning: "We should focus on key areas, strengthen research on major common technologies and key core technologies, strive to make great progress in basic science and technology fields, achieve major breakthroughs in key core technology fields, gather and drive a number of related industrial chain enterprises, and push the manufacturing industry forward to the middle and high end."