设计模式
SEE
Design Patterns: Elements of Reusable Object-Oriented Software
以 Erich Gamma 为第一作者,出版于1995年,被誉为设计模式领域的经典教科书,俗称 Gamma 95。WIKIPEDIA: Software design pattern
https://en.wikipedia.org/wiki/Software_design_patternWIKIPEDIA: Design Patterns
https://en.wikipedia.org/wiki/Design_Patterns