From: Dario Teixeira <darioteixeira@yahoo.com>
To: Jacques Carette <carette@mcmaster.ca>
Cc: caml-list@yquem.inria.fr
Subject: Re: [Caml-list] Width subtyping
Date: Fri, 29 May 2009 08:45:32 -0700 (PDT) [thread overview]
Message-ID: <407261.14507.qm@web111505.mail.gq1.yahoo.com> (raw)
Hi,
> The dual of sums is products. Open (labelled) sums
> are "polymorphic variants". Their duals are open
> (labelled) products are "rows" (which O'Caml already
> supports, through its objects).
Yes, as I mentioned, for some classes of this particular problem the object
system can be put to good use -- when there is a clear tree for inheritance,
for example. Unfortunately that is always not the case; there are problems
where you would end up with a tangled web of multiple inheritances just for
the sake of avoiding duplicating methods.
Cheers,
Dario
next reply other threads:[~2009-05-29 15:45 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-29 15:45 Dario Teixeira [this message]
2009-05-29 16:06 ` Till Varoquaux
-- strict thread matches above, loose matches on Subject: below --
2009-06-01 13:56 Dario Teixeira
2009-06-01 14:21 ` David Allsopp
2009-06-01 17:04 ` Peng Zang
2009-05-31 23:08 Dario Teixeira
2009-06-01 11:34 ` Yaron Minsky
2009-05-30 15:36 Dario Teixeira
2009-05-31 5:18 ` Dave Benjamin
2009-05-31 7:34 ` David Allsopp
2009-06-01 4:21 ` Jacques Garrigue
2009-05-29 15:50 Dario Teixeira
2009-05-29 15:38 Dario Teixeira
2009-05-29 14:10 Dario Teixeira
2009-05-29 14:21 ` [Caml-list] " Jacques Carette
2009-05-29 14:43 ` David Allsopp
2009-05-29 15:33 ` Richard Jones
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