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知县虽小，也是父母官。「神秘事件公司」成员一行人决定放下忙碌的侦探工作，来到热带岛屿好好度假。没想到，他们发现这座小岛不仅似曾相识，而且还被突然出现的僵尸大军追得到处跑！这次的谜团真相，究竟只是狡猾罪犯在装神弄鬼，还是真的有看不见的超自然力量在作祟？Big Man's Second ChildUnfortunately, there is not only one kind of electric light in this world. Many hotels have another kind of electric lamp, which has only one switch, but its performance is: the first time it is pressed to turn on the weak light, the second time it is pressed to turn on the strong light, and the third time it is turned off. Now the above code must be modified to complete the manufacture of this new type of electric lamp:讲述一个鳏夫父亲Al和他的青少年儿子Fin都爱上了Evelyn——前脱衣舞女王，现在从事花艺职业。当他们发现要竞争同一个女人后，旧疮疤也再次被揭开。我让人去老太爷那边叫人。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.