结构型模式 组合模式
摘要：
Composite Definition Compose objects into tree structures to represent part-whole hierarchies. Composite lets clients treat individual objects and composition... 阅读全文
结构型模式，装饰模式
摘要：
Definition Attach additional responsibilities to an object dynamically. Decorators provide a flexible alternative to subclassing for extending functionality. ... 阅读全文