From: djberg96@... (Daniel Berger)
Date: 2004-06-09T03:23:38+09:00
Subject: Re: Interfaces and semantics (or, how to hashpipe a duck)

"Sean O'Dell" <sean@celsoft.com> wrote in message news:<200406080736.32485.sean@celsoft.com>...
> On Tuesday 08 June 2004 06:04, Daniel Berger wrote:
> > "Sean O'Dell" <sean@celsoft.com> wrote in message
> >
> > I published an "interface" module a short while back.  You can find it
> > on the RAA or at:
> 
> Mine looks pretty close to how yours works except it verifies the number of 
> method arguments.  Whenever a method is added or removed, the compliance flag 
> is lowered so the next time has_interface? is called, a complete check is 
> re-done to be sure the object still complies.  Is yours written in C?  One 
> thing I wanted was for this to have as little overhead as possible, so I 
> didn't feel like I was slowing down my project too much by calling it 
> everywhere.
> 
> 	Sean O'Dell

It's pure Ruby.  I don't think adding arity checks and hooks for
method_added/method_removed would be difficult.

Regards,

Dan