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　　本片将纪实性地展现主人公针锋相对的生死冒险，犯罪者的凶残狂妄、受害者的冷静求存、刑警团队的英勇无畏，都将在警匪对决中精彩呈现。　　这部剧由《美国众神》作者尼尔·盖曼与《碟形世界》作者特里·普拉切特所著的同名幽默奇幻小说改篇（该小说名称是恶搞恐怖电影《凶兆 The Omen》）。 两位作家斩获了二十余次奇幻文学的头等大奖，写《好兆头》却只是为了让对方大笑出声。原著功力可想而知。开天辟地后，地狱黄泉中第一条血海所化，秉着毁灭意志而生的大魔头，就这样子？这也太普通了吧？但是很快，杨舟就否定了自己的想法。Factory Pattern: Factory Pattern is a frequently used pattern. Classes implemented according to Factory Pattern can generate instances of one of a group of classes according to the provided data. Usually, this group of classes has a common abstract parent class and implements the same methods, but these methods perform different operations for different data. First of all, we need to define a base class. Subclasses of this class implement methods in the base class through different methods. Then you need to define a factory class that can generate different subclass instances according to conditions. After getting an instance of a subclass, developers can call methods in the base class regardless of which subclass instance is returned.Construct the leave function:(3) Advanced Skills