From: Martin Berger <martinb@dcs.qmul.ac.uk>
To: skaller@users.sourceforge.net, caml-list <caml-list@inria.fr>
Subject: Re: [Caml-list] environment idiom
Date: Mon, 13 Dec 2004 11:38:15 +0000 [thread overview]
Message-ID: <41BD7F27.1080407@dcs.qmul.ac.uk> (raw)
In-Reply-To: <1102935187.2578.85.camel@pelican.wigram>
it is quite simple: of course the monadic IO that has been discussed
has side-effects. hence it is not funcitonal. but -- and that's a big
but -- what the monadic types do is: LIMIT composability in a way that
no typable context can OBSERVE the statefulness of the monadic code.
an external observer, not bound to the typing discipline, can observe
the stateful behaviour.
more generally: the question of whether a code fragment is functional
or not is meaningless without specifying the class of admissable
observations, i.e. the class of admissible context. any programming
language becomes functional for example if the class of contexts is
generated by
C[.] ::= SKIP | x := n | [.]
or something silly like that.
martin
next prev parent reply other threads:[~2004-12-13 11:31 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-12-09 2:07 HENRIKSON, JEFFREY
2004-12-09 4:47 ` [Caml-list] " Jacques Garrigue
2004-12-09 6:02 ` Michael Walter
2004-12-09 11:28 ` Jacques Garrigue
2004-12-09 20:02 ` pad
2004-12-09 23:11 ` Jacques Garrigue
2004-12-10 2:30 ` skaller
2004-12-09 9:09 ` Richard Jones
2004-12-09 13:12 ` [Caml-list] " Ville-Pertti Keinonen
2004-12-10 11:59 ` Richard Jones
2004-12-10 10:52 ` [Caml-list] " Andrej Bauer
2004-12-10 12:13 ` Richard Jones
2004-12-10 23:35 ` Jacques Garrigue
2004-12-11 2:30 ` skaller
2004-12-11 14:31 ` Andrej Bauer
2004-12-11 18:13 ` Markus Mottl
2004-12-11 23:56 ` skaller
2004-12-12 2:36 ` William Lovas
2004-12-12 5:33 ` skaller
2004-12-12 19:09 ` Michael Walter
2004-12-13 0:48 ` skaller
2004-12-13 2:03 ` Michael Walter
2004-12-13 2:05 ` Michael Walter
[not found] ` <877e9a170412121844b633bb8@mail.gmail.com>
2004-12-13 2:45 ` Michael Walter
2004-12-13 6:18 ` skaller
2004-12-13 7:08 ` skaller
2004-12-13 9:56 ` Michael Walter
2004-12-13 12:59 ` skaller
2004-12-13 8:56 ` Thomas Fischbacher
2004-12-13 9:21 ` Jacques Garrigue
2004-12-13 10:05 ` Michael Walter
2004-12-13 10:29 ` Thomas Fischbacher
2004-12-13 21:16 ` Michael Walter
2004-12-13 10:20 ` Thomas Fischbacher
2004-12-13 12:09 ` Jacques Garrigue
2004-12-13 12:48 ` Thomas Fischbacher
2004-12-13 14:09 ` skaller
2004-12-13 21:39 ` Michael Walter
2004-12-13 13:22 ` skaller
2004-12-13 16:54 ` Marcin 'Qrczak' Kowalczyk
2004-12-13 18:44 ` Thomas Fischbacher
2004-12-13 10:11 ` Michael Walter
2004-12-13 11:46 ` skaller
2004-12-13 5:41 ` skaller
2004-12-13 9:29 ` Michael Walter
2004-12-13 12:30 ` skaller
2004-12-13 13:49 ` Martin Berger
2004-12-12 23:03 ` Thomas Fischbacher
2004-12-13 1:26 ` skaller
2004-12-13 8:37 ` Thomas Fischbacher
2004-12-13 10:53 ` skaller
2004-12-13 11:38 ` Martin Berger [this message]
2004-12-13 13:33 ` skaller
2004-12-13 12:01 ` Thomas Fischbacher
2004-12-13 13:41 ` skaller
2004-12-11 23:29 ` skaller
2004-12-12 0:21 ` Jacques Carette
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