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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.翻拍自玄彬、河智苑主演的《秘密花园韩国版》回想起来，因为最肤浅的理由而成为警察的川合麻依非常后悔。范依兰见状摇摇头道：不是那个……不是我不方便，是他不方便。定陶城外，田横也是泪流满面……他的侄子齐王田广死了，在汉军攻陷临淄的那个夜晚自刎而死了。花无缺看了第一眼，感觉还不错，第二眼时，便顿时发觉自己错了，怎么能单纯用美女这两个字，来唐突面前的佳人。The default state of the iPhone is that the text message will display the content of the text message.