>>>>> "Chaim" == Chaim Frenkel <[EMAIL PROTECTED]> writes:

Chaim> Given N different fundemental types, we end up with NxN vtbl entries.

Chaim> A long time ago I looked at some smalltalk code that did

Chaim>  foo add: bar

Chaim> It must have been pretty bad, because I can't remember how they did
Chaim> it. But I vaguely recall that at least one path, flipped the object
Chaim> and the sender. Others did asFoo messages on the sender.

Yes, double dispatch.  Addressed by "the Damian" in Object Oriented Perl
(the Book, and the forthcoming Musical) as it applies to perl at a Perl
level.

-- 
Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095
<[EMAIL PROTECTED]> <URL:http://www.stonehenge.com/merlyn/>
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