本一a和本二a区别a

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.As an old player in his forties, when he was a child, he was full of resentment towards SFC, which required 5 yuan an hour to play.历史学家和考古学家深入到世界上最古老城市的地下，探索其中的秘密空间和奇珍异宝。他们把你前所未见的古代世界，呈现在你的面前，探索一座座神秘古城。Syfy超自然动作剧《Ghost Wars》联合Nomadic Pictures共同制作。Vincent DOnofrio、Kim Coates、Avan Jogia、Kristin Lehman和Meatloaf将出演13集的首季。本剧背景设置在一个超自然力量泛滥 的偏远的阿拉斯加哦小镇，讲述了当地的流浪者Roman Mercer（Jogia饰）需要忍受小镇上的歧视和自己内心的魔鬼，学会驾驭潜藏在他身体里的超自然力量，将小镇从阴魂不散而且对当地人生活造成极大威胁的超自然能量中拯救出来。于是，黎章决定晚上去。他做这些事的想法也很简单，这年头地主商人是混不舒服的，前有庞夫人这样的恶狼，后有海瑞那样的猛虎，外面还有不讲道理的倭寇，实在是一丝安全感也没有，这根本不是盛世，这是乱世。