1 // CS0411: The type arguments for method `Hello.World<U>(U, IFoo<U>)' cannot be inferred from the usage. Try specifying the type arguments explicitly
3 public interface IFoo<T>
6 public class Foo : IFoo<int>, IFoo<string>
11 public void World<U> (U u, IFoo<U> foo)
14 public void Test (Foo foo)
16 World ("Canada", foo);