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只是正魔两道血海深仇，不死不休，魔道妖女即使死上千百次，也难泄正道诸人心头愤怒，那些正道之人怎么可能放碧瑶和张小凡走。另一个黑名单叫「赵书维」，他是个好人，但他好到让人误会、误解、失望，就是个问题了——五年前，全世界都以为「他和郭勤勤在一起」了，但他却只当郭勤勤是最好的朋友！即使你我，也不比凡人好上多少。王勇把手伸进口袋，取出一张纸片，这纸片精致，上面有着一行清秀俊逸的手写字，正是杂志中天启的亲笔签名书签。这时，有一个很年轻，相貌不错，略显削瘦的青年走了出来。尉缭说的一点都不错，局势变化无常，万一要是真出现这种恶毒情况，越国确实是危险。One problem with the factory method pattern is that the creation of the class depends on the factory class, that is to say, if you want to expand the program, you must modify the factory class, which violates the closure principle. Therefore, from the design point of view, there are certain problems, how to solve them? We use the abstract factory mode to create multiple factory classes, so that once new functions need to be added, we can directly add new factory classes without modifying the previous code. Because the abstract factory is not very easy to understand, let's look at the diagram first, and then it is easier to understand with the code.