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影片改编自不思凡 (《大护法》)的同名原创短片，由李凌霄执导，彩条屋影业(《哪吒之魔童降世》)出品，讲述一场关于“善恶抉择”的人性考验。改编自2007年出版的畅销同名小说，由小说家金薰创作完成。? Singleton pattern is the most common and simplest design pattern in design pattern, which ensures that only one instance exists in the program and can be accessed globally. For example, account information object management used in actual APP development? Objects (SQLiteOpenHelper) and so on all use singleton mode. This model has several advantages:科学家终于发现了往返古今、令时光倒流的神秘缺口，却无法估计原始恐龙一旦造访，今天的洛杉矶，将会出现如何灾难性的暴虐……小女娃见胡老大很厉害的样子，担心葫芦吃亏，拖着哭腔对韩庆和春子喊道：还不过去帮忙。就是在这个当口，他不靠谱的老爸竟然拿出了棺材本，帮他渡过了难关。可他万万没想到，这房子虽然是有了，可不是他一个人的。原来光棍半辈子的老爸竟然是借坡下驴，用这房子成全了自己个儿的夕阳恋。Abstract factory mode refers to providing an interface to create a series of related or interdependent objects, so that clients can create product objects in multiple product families without specifying the specific type of products, emphasizing the change of "series objects". The main points of its implementation include: