Tag: 变体

为什么我得到“类型参数必须是无效的……”错误？

我将尝试缩短此代码示例： public interface IThing { //… Stuff } public class Thing1 : IThing { } public class Thing2 : IThing { } public interface IThingView { ICollection ViewAll(); } public class ThingView : IThingView { ICollection ViewAll() { return new List(); } // There’s a big operation here } public interface IThingViewerFactory { public IThingView […]