... 代理模式与AOP 观察者模式与MVC。 抽象（Abstraction）、封装（Encapsulation）和信息隐藏（Information Hiding） ...
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不过，观察者模式与单个事件源关联，而反应器模式则与多个事件源关联。
The Observer pattern is associated with a single source of events, however, whereas the Reactor pattern is associated with multiple sources of events.
反应器模式与观察者模式（Observer pattern）在这个方面极为相似：当一个主体发生改变时，所有依属体都得到通知。
The Reactor pattern is closely related to the Observer pattern in this aspect: all dependents are informed when a single subject changes.
在设计控件与服务引擎时更加注重他们的独立性架构，充分利用观察者设计模式，使得项目具有灵活的扩展性。
Taking into account independence between modules for further extension, this project makes full use of the observation pattern in control and service engines design.
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