From: Luc Maranget <luc.maranget@inria.fr>
To: skaller@ozemail.com.au (John Max Skaller)
Cc: luc.maranget@inria.fr (Luc Maranget),
warplayer@free.fr (Nicolas Cannasse), caml-list@inria.fr (OCaml)
Subject: Re: [Caml-list] Matching when
Date: Mon, 5 Aug 2002 21:29:17 +0200 (MET DST) [thread overview]
Message-ID: <200208051929.VAA0000007257@beaune.inria.fr> (raw)
In-Reply-To: <3D4EA41B.8080502@ozemail.com.au> from "John Max Skaller" at aoû 06, 2002 02:13:15
>
> #include <std.flx>
>
> match (2,1) with
> | ( (?x when x>=1), (?y when y >=1)) when x >=2 => { print "YES"; endl; }
> | _ => { print "NO"; endl; }
> endmatch;
>
> wherein 'when' expressions are part of patterns, and as you can see,
> can be nested within a pattern -- making the grammar for patterns
> and expressions mutually recursive.
>
> I'm curious as to what problems you perceive with
> the mutual recursion.
>
> --
> John Max Skaller, mailto:skaller@ozemail.com.au
> snail:10/1 Toxteth Rd, Glebe, NSW 2037, Australia.
> voice:61-2-9660-0850
>
>
>
>
Nothing special, it is just an important change for a questionable
benefit....
Changing that would change many things in the front end, in
particular, the type-checker.
May be easy, may not be...
--Luc
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next prev parent reply other threads:[~2002-08-05 19:29 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-08-05 9:26 Nicolas Cannasse
2002-08-05 9:41 ` Luc Maranget
2002-08-05 16:13 ` John Max Skaller
2002-08-05 19:29 ` Luc Maranget [this message]
2002-08-05 20:16 ` [Caml-list] Sharing Files between OCaml and C Michael Tucker
2002-08-06 13:04 ` Olivier Andrieu
2002-08-06 14:01 ` Bruno.Verlyck
2002-08-06 18:50 ` Lex Stein
2002-08-07 11:40 ` Bruno.Verlyck
2002-08-05 13:05 ` [Caml-list] Matching when Pierre Weis
2002-08-05 15:50 ` John Max Skaller
2002-08-05 16:02 ` Remi VANICAT
2002-08-05 16:23 ` John Max Skaller
2002-08-05 18:25 ` Oleg
2002-08-06 6:37 ` Florian Hars
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