摘要： Item 1:使用属性,避免可访问的数据成员Use Properties Instead of Accessible Data Members属性允许你创建一个想可访问数据的接口,而且仍然有使用方法的所有优点.Propertiesenable you to create an interface that acts like data access but still has allthe ben... 阅读全文

摘要： UML:Proxy (MathProxy) maintains a reference that lets the proxy access the real subject. Proxy may refer to a Subject if the RealSubject and Subject interfaces are the same. 维持一个引用让代理访问真正的Subject。代理可以... 阅读全文