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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.Terror晚上，这家也没点灯，男人和媳妇早早地上床去睡了。墨鲫笑眯眯地说道：这就对了。《2017变形计》是由芒果TV独家自制的纪实类栏目，禀承湖南卫视《变形计》“换位思考”这一理念，而且更推至极致，在节目中，你不仅要站在对方立场去设想和理解对方，你还要去过对方的生活，真正体验对方世界的大小风云，品察对方思想最微妙的情绪触动。千户非常虚伪地赞叹一句过后，眼睛毫无掩饰地盯住了他手中的镯子，你们这是……太讲究了，杨举人太讲究了。讲述了推理女王刘雪玉（崔江姬 饰）与冷酷的热血刑警何完胜（权相宇 饰）组成拍档，并一起调查各种犯罪事件的推理故事。