From: Sven LUTHER <luther@dpt-info.u-strasbg.fr>
To: Pierre Weis <Pierre.Weis@inria.fr>
Cc: Sven LUTHER <luther@dpt-info.u-strasbg.fr>, caml-list@inria.fr
Subject: Re: Same label in different types, how do people solve this?
Date: Fri, 8 Dec 2000 10:48:08 +0100 [thread overview]
Message-ID: <20001208104808.A753@lambda.u-strasbg.fr> (raw)
In-Reply-To: <200012080936.KAA10930@pauillac.inria.fr>; from Pierre.Weis@inria.fr on Fri, Dec 08, 2000 at 10:36:44AM +0100
On Fri, Dec 08, 2000 at 10:36:44AM +0100, Pierre Weis wrote:
> > Another idea would be to add some construct to use something like :
> >
> > type p3d = { x:float;y:float;z:float }
> > type p2d = { x:float;y:float }
> >
> > and then be able to do :
> >
> > {p3d.x=10.;p3d.y=20.;p3d.z=30.}
> >
> > and
> >
> > {p2d.x=0; p2d.y=5}
> >
> > Would this be difficult to do ?
>
> You will have ambiguities in accessing records: what means r.y.z ? Is
> it access to field z of type y of r, or access to field z of access to
> field y of r ?
>
> I would suggest another syntactic notation to specify the type to
> which a label belongs: label@@type.
>
> {x@@p2d = 0; y = 5}
> r.x@@p2d
Yes, didn't think about it, but that would be best.
(too bad there is not a third kind of case to do the same kind of trick that
is done with modules ...)
Friendly,
Sven Luther
next prev parent reply other threads:[~2000-12-11 15:07 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-12-06 21:22 Mattias Waldau
2000-12-07 16:49 ` John Max Skaller
2000-12-07 18:34 ` Maxence Guesdon
2000-12-07 23:02 ` Gerd Stolpmann
2000-12-08 1:22 ` Jacques Garrigue
2000-12-08 9:31 ` Sven LUTHER
2000-12-08 9:36 ` Pierre Weis
2000-12-08 9:48 ` Sven LUTHER [this message]
2000-12-08 18:41 ` John Max Skaller
2000-12-08 9:40 ` Nicolas barnier
2000-12-08 16:36 ` Brian Rogoff
2000-12-11 17:19 ` Pierre Weis
2000-12-10 12:49 ` Mattias Waldau
2000-12-11 18:23 ` Chris Hecker
2000-12-11 19:17 ` Pierre Weis
2000-12-12 10:02 ` Sven LUTHER
2000-12-12 3:25 ` Chet Murthy
2000-12-12 17:43 ` John Max Skaller
2000-12-12 19:24 ` Functions must be explicitly typed, (was Same label in different types, how do people solve this?) Mattias Waldau
2000-12-13 0:51 ` John Max Skaller
2000-12-15 10:13 ` Andreas Rossberg
2000-12-15 12:50 ` Frank Atanassow
2000-12-14 18:42 ` Stefan Monnier
2000-12-15 12:47 ` Pierre Weis
2000-12-15 13:39 ` Mattias Waldau
2000-12-15 23:37 ` Brian Rogoff
2000-12-16 14:10 ` ROverloading John Max Skaller
2000-12-15 21:51 ` Same label in different types, how do people solve this? Bruce Hoult
2000-12-12 17:19 ` John Max Skaller
2000-12-10 14:57 Ohad Rodeh
2000-12-13 13:17 Dave Berry
2000-12-13 14:31 ` Mattias Waldau
2000-12-15 10:01 ` John Max Skaller
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