I would suggest that using an interface at compile time is not the
only approach.  Unit tests can be run on classes to check that they do
indeed quack.
-- 
Pete Forman                -./\.-  Disclaimer: This post is originated
WesternGeco                  -./\.-   by myself and does not represent
[EMAIL PROTECTED]    -./\.-   the opinion of Schlumberger or
http://petef.22web.net           -./\.-   WesternGeco.
--
http://mail.python.org/mailman/listinfo/python-list

Reply via email to