GoF（“四人帮”Gang of Four，指Erich Gamma, Richard Helm, Ralph Johnson & John Vlissides四人）的《设计模式》（1995年出版）是第一次将设计模式提升到理论高度，并将之规范化。本书提出了23种基本设计模式，自此，在可复用面向对象软件的发展过程中，新的大量的设计模式不断出现。-GoF (" Gang of Four"　Gang of Four, that Erich Gamma, Richard Helm, Ralph Johnson &　John Vlissides four) of " design patterns"　(published in 1995) is the first time raised to the level of theory design patterns, and the standardization. Book presents 23 kinds of basic design patterns, since, in the reusable object-oriented software development process, a large number of new design patterns emerging.