Dynamic Method Dispatch

[Jarrett Billingsley]

"Derek Ney" <derek at hipgraphics.com> wrote in message 
news:eou8dj$1o2a$1 at digitaldaemon.com...

> I just can't see how I can do this with a delegate cause the receiver is 
> dynamic.
> I need a table mapping methodname to a method pointer that is not tied
> a particular instance. In a sense I could use a delegate if I could do 
> this:
>
> CallMethod(receiver,methodname, methodarg)
> {
>  delegate dg = lookup_method(methodname);
>
>  dg.ptr = reciever;
>
>  return dg(methodarg);
> }

You can actually (though maybe not with GDC?  it's perfectly legal in DMD, 
but I thought I might have heard that it doesn't compile under GDC..).

> But I do not think you can do that nor is it thread safe nor pretty.
> Any ideas of how to do this cleanly? Seems like it should be simple.
> If there is a method pointer syntax it would be simple.

Nope, this is the only way to do unbound delegates.  Some people have 
propose a genuine syntax for specifying the context pointer of the delegate 
when it's called, but nothing's come of it as of yet.