Hi,

First, this library definetly fills a few big needs.

However, I can not seem to get the static duck typing to work.

I am trying a very simple example in isolation setup as:

public interface iContract
{
object Create();
}

public class SomeClass
{
public static object Create()
{
return(new object());
}
}

I then run the following code:

iContract poContract = (iContract)DuckTyping.StaticCast(typeof(iContract), typeof(SomeClass));
var poNew = poContract.Create();

The call poContract.Create() blows-up with:
System.MethodAccessException: TEST.CW.ObjectScope.SomeClass.Create().

DuckProxy.Create()
CW.ObjectScope.cw_ScopeBase.Create(Type typCreate) in B:\Dev\1_NEW\CW.Frame\CW.ObjectScope\cw_ScopeBase.Creation.cs: line 30

Any ideas what I doing wrong?

Many Thanks,

Kavan

Hi Again,

Got it working!

Seems the problem was that implementation class 'SomeClass' was not marked as public.

This was causing the MemberAccess exception.

As a side question, why does it matter since the DuckTyper is binding right to the method. And if it is necessary that the implementation class be public should there not be some runtime checks?

Anyways this library really rocks, I just wish I had found this a few months ago.

You should consider posting this on CodeProject.

Thanks a bunch,

Kavan

Hi David,
I think your library is doing structural typing rather than Duck typing. The Wikipedia Duck Typing article shows the difference between the two, and in the articles discussion page, the 'class DuckDecoy' example shows something that works under Duck Typing but would not under Structural Subtyping.

- Paddy