摘要：
装饰模式定义：Attach additional responsibilities to an object dynamically keeping the same interface. Decoators provide a flexible alternative to subclassing for extending functionality.动态地给一个对象添加一些额外的职责。就增加功能来说，装饰模式相比生成子类更为灵活。 如上图所示（截取自《Head First Design Patterns 阅读全文
装饰模式定义：Attach additional responsibilities to an object dynamically keeping the same interface. Decoators provide a flexible alternative to subclassing for extending functionality.动态地给一个对象添加一些额外的职责。就增加功能来说，装饰模式相比生成子类更为灵活。 如上图所示（截取自《Head First Design Patterns 阅读全文