mcs/errors/cs0738-3.cs

   1 // CS738: `CB' does not implement interface member `IG<IA>.Method()' and the best implementing candidate `CA<IB>.Method()' return type `IB' does not match interface member return type `IA'
   2 // Line: 29
   3
   4 public interface IA
   5 {
   6 }
   7
   8 public interface IB : IA
   9 {
  10 }
  11
  12 public interface IG<out U>
  13 {
  14         U Method ();
  15 }
  16
  17 public interface IDerived : IG<IA>
  18 {
  19 }
  20
  21 public abstract class CA<T> : IG<T>
  22 {
  23         public T Method ()
  24         {
  25                 return default (T);
  26         }
  27 }
  28
  29 public class CB : CA<IB>, IG<IA>
  30 {
  31 }