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我有2个不同的小部件共享10个相同的成员。然而他们也有2个阶段。 每个阶段都有其他人没有的特定成员。如何正确编程
public class widget
private _id as integer
private _engravedId as string
private _stage as WidgetStage
private _wig as IWidget
end class
public interface IWidget
Calculate()
end interface
public class Twidget
implemets IWidget
private t as integer
private b as double
private d as double
end class
public class Rwidget
implemenents IWidget
private y as integer
private x as double
private b as double
end class
如果我在我的类中声明一个Iwidget,那么我将不得不将它强制转换为访问派生类变量。有没有更好的办法?
如果额外的变量是私人的,即使你施放它,你将如何访问这些变量? – Prescott 2012-08-04 01:25:04