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Creative patterns are patterns used to create objects, abstracting the instantiation process. All creative patterns have two things in common. First, they all encapsulate the specific types of information used by the system. Second, they hide how instances of these classes are created and organized. Creative patterns include singleton patterns, factory method patterns, abstract factory patterns, builder patterns and prototype patterns.Conclusion 4: Ying Long, who is full of orange stars, should not use attack% at position 6.In actual development, many scenes can be simulated by state machines, for example, a drop-down menu has display, suspension, hiding and other states under hover action. A TCP request has the states of establishing connection, listening, closing, etc. In a combat game, the characters are attacked, defended, jumped, fell, etc.跟紫茄、蝉儿她们说说话儿。With that, Mary smiled a few times, as if to cheer herself up.The above is the whole content of this article, I hope the content of this article can bring some help to everyone's study or work, and I also hope everyone can support the code farming network more.We can call this object that specializes in Pizza a factory. Take a look at the implemented code: