From: William Lovas <wlovas@stwing.upenn.edu>
To: caml-list@inria.fr
Subject: Re: [Caml-list] Coinductive semantics
Date: Thu, 19 Jan 2006 19:49:50 -0500 [thread overview]
Message-ID: <20060120004948.GA2490@coruscant.stwing.upenn.edu> (raw)
In-Reply-To: <1137594157.8943.106.camel@rosella>
On Thu, Jan 19, 2006 at 01:22:37AM +1100, skaller wrote:
> On Wed, 2006-01-18 at 13:58 +0100, Hendrik Tews wrote:
> > Looking at an object through a mirror you see precisely what you
> > can see looking at the object itself.
>
> Perhaps my analysis is naive. But consider a simpler case
> of products and sums. They're dual concepts, are they not?
A thought: products and sums are duals, classically, but not
intuitionistically. Since O'Caml lacks classical control constructs like
callcc, there's no redundancy having both products and sums: neither is
representable solely using the other.
Also, O'Caml's datatypes are much more than just sums: they also include
recursive types, polymorphism, pattern matching, and a degree of
abstraction.
cheers,
William
next prev parent reply other threads:[~2006-01-20 0:49 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-05 18:23 Alessandro Baretta
2006-01-05 19:48 ` [Caml-list] " David Baelde
2006-01-06 13:12 ` Andrej Bauer
2006-01-10 11:10 ` Francisco J. Valverde Albacete
2006-01-11 8:34 ` Hendrik Tews
2006-01-11 12:19 ` skaller
2006-01-11 14:54 ` Andrej Bauer
2006-01-12 2:10 ` skaller
2006-01-12 14:03 ` Andrej Bauer
2006-01-12 21:54 ` skaller
2006-01-13 10:23 ` Hendrik Tews
2006-01-13 14:42 ` skaller
2006-01-18 12:58 ` Hendrik Tews
2006-01-18 14:22 ` skaller
2006-01-20 0:49 ` William Lovas [this message]
2006-01-20 9:57 ` Andrej Bauer
2006-01-20 18:59 ` William Lovas
2006-01-20 20:59 ` skaller
2006-01-21 18:36 ` Andrej Bauer
2006-01-22 3:16 ` skaller
2006-01-22 12:23 ` Andrej Bauer
2006-01-22 15:35 ` skaller
2006-01-22 17:26 ` Kenn Knowles
2006-01-22 21:52 ` Andrej Bauer
2006-01-21 19:06 ` Andrej Bauer
2006-01-13 10:40 ` Andrej Bauer
[not found] ` <43C7B17A.1070503@barettadeit.com>
2006-01-14 16:53 ` Andrej Bauer
2006-01-05 20:38 Don Syme
2006-01-06 15:33 ` Alessandro Baretta
2006-01-08 10:02 ` Andrej Bauer
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