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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.和谈的过程之中，我们的军队和城防不要动。妮可·基德曼将主演Hulu新剧《九个完美陌生人》(Nine Perfect Strangers，暂译)。大卫·E·凯利(《大小谎言》)、约翰-亨利·巴特沃斯([明日边缘])共同操刀剧本，并运作剧集，妮可还将担任剧集执行制片人。该剧根据《大小谎言》作者莉安·莫里亚蒂同名新书改编，故事讲述在一家以治愈和令人转变为目标的精品健康度假村里，九位在城市中饱受压力困扰的居民来到这里向往一种更好的生活方式。在为期10天的静修期间，度假村的指导玛莎(妮可饰)将照顾他们，玛莎的目的是重振他们疲惫的心灵和身体。然而，这九个完美陌生人并不知道将会发生什么。Hulu已直接预订该剧，并计划于2020年播出。(未完待续……) show_style();。Assault: Liang Qianting, 27,AMC续订《行尸之惧》第七季。