From: Wes Groleau <wwgrol@sparc01.ftw.rsc.raytheon.com>
Subject: Re: Dimensionality Checking (Ada 20XX)
Date: Fri, 07 Dec 2001 09:36:08 -0500
Date: 2001-12-07T09:36:08-05:00 [thread overview]
Message-ID: <3C10D3D8.DF189A55@sparc01.ftw.rsc.raytheon.com> (raw)
In-Reply-To: VXSP7.4843$Yy.275860@rwcrnsc53
Mark Lundquist wrote:
>
> "Wes Groleau" <wgroleau@usa.com> wrote ....
> > > Accel : Magnitude;
> > > for Accel'Unit use
> > > ISO_Metric_Units.Meter / ISO_Metric_Units.Second**2;
> >
> > In some cases, might there be multiple ways to describe
> > the units? Speed is Acceleration * Time but it is also
> > Distance / Time.
>
> Right, which is why (a) the concepts of "unit" and of "dimension" need to be
> loosely coupled (this is missing from the proposals I've seen so far), and
> then (b) you have to distinguish between base and derived dimensions.
I guess what I mean is that the compiler would have to have some smarts
to be able to figure out all the numerous ways of deriving a derived
dimension--including from other derived dimensions.
--
Wes Groleau
http://freepages.rootsweb.com/~wgroleau
next prev parent reply other threads:[~2001-12-07 14:36 UTC|newest]
Thread overview: 95+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-12-02 16:01 Another Idea for Ada 20XX James Rogers
2001-12-02 16:38 ` Preben Randhol
2001-12-02 22:26 ` James Rogers
2001-12-02 21:19 ` Patrick Hohmeyer
2001-12-02 21:26 ` Lutz Donnerhacke
2001-12-02 23:49 ` Patrick Hohmeyer
2001-12-03 6:06 ` Wilhelm Spickermann
2001-12-03 8:58 ` Lutz Donnerhacke
2001-12-03 13:40 ` Thomas Koenig
2001-12-03 0:21 ` Robert C. Leif, Ph.D.
2001-12-03 0:35 ` Robert Dewar
2001-12-03 1:33 ` James Rogers
2001-12-03 12:34 ` Dirk Dickmanns
2001-12-04 19:02 ` Unit handling (was: Another Idea for Ada 20XX) Wilhelm Spickermann
2001-12-03 14:56 ` Another Idea for Ada 20XX Mark Lundquist
2001-12-03 15:12 ` Lutz Donnerhacke
2001-12-03 21:13 ` Dimensionality Checking (Ada 20XX) Nick Roberts
2001-12-04 14:00 ` Dmitry A. Kazakov
2001-12-06 19:52 ` Britt Snodgrass
2001-12-06 20:55 ` Mark Lundquist
2001-12-06 22:38 ` Wes Groleau
2001-12-06 23:12 ` Mark Lundquist
2001-12-07 14:36 ` Wes Groleau [this message]
2001-12-07 9:37 ` Dmitry A. Kazakov
2001-12-07 22:51 ` Mark Lundquist
2001-12-03 17:00 ` Another Idea for Ada 20XX chris.danx
-- strict thread matches above, loose matches on Subject: below --
2001-12-07 0:09 Dimensionality Checking (Ada 20XX) Snodgrass, Britt (NM75)
2001-12-07 16:15 ` Ian
2001-12-09 17:58 ` Nick Roberts
2001-12-09 22:58 ` Nick Roberts
2001-12-10 0:17 ` Mark Lundquist
2001-12-10 1:51 ` James Rogers
2001-12-10 3:33 ` Nick Roberts
2001-12-10 19:09 ` Nick Roberts
2001-12-11 8:20 ` Thomas Koenig
2001-12-11 15:37 ` Nick Roberts
2001-12-11 20:18 ` Thomas Koenig
2001-12-12 0:58 ` Mark Lundquist
2001-12-12 8:19 ` Wilhelm Spickermann
2001-12-12 14:21 ` Stephen Leake
2001-12-12 19:10 ` Nick Roberts
2001-12-13 19:04 ` Stephen Leake
2001-12-13 22:56 ` Nick Roberts
2001-12-14 0:11 ` Nick Roberts
2001-12-14 22:14 ` Mark Lundquist
2001-12-15 1:30 ` Nick Roberts
2001-12-10 20:22 ` Thomas Koenig
2001-12-10 17:21 ` Wes Groleau
2001-12-10 19:51 ` Mark Lundquist
2001-12-10 19:56 ` Wes Groleau
2001-12-10 20:37 ` Mark Lundquist
2001-12-10 18:56 ` Nick Roberts
2001-12-11 15:05 ` Wes Groleau
2001-12-11 16:39 ` Stephen Leake
2001-12-11 19:05 ` Nick Roberts
2001-12-11 22:50 ` Mark Johnson
2001-12-12 1:59 ` Nick Roberts
2001-12-11 23:01 ` Stephen Leake
2001-12-12 2:21 ` Nick Roberts
2001-12-12 14:16 ` Stephen Leake
2001-12-13 19:52 ` Nick Roberts
2001-12-13 22:22 ` Nick Roberts
2001-12-14 6:40 ` Robert C. Leif, Ph.D.
2001-12-14 17:30 ` Stephen Leake
2001-12-14 17:38 ` Stephen Leake
2001-12-11 22:45 ` Mark Lundquist
2001-12-12 1:42 ` Nick Roberts
2001-12-12 15:17 ` Mark Lundquist
2001-12-12 14:03 ` Stephen Leake
2001-12-12 9:35 ` Dmitry A. Kazakov
2001-12-12 14:26 ` Stephen Leake
2001-12-13 17:02 ` daniele andreatta
2001-12-13 19:06 ` Stephen Leake
2001-12-14 10:16 ` Dmitry A. Kazakov
2001-12-14 22:01 ` Nick Roberts
2001-12-17 11:10 ` Dmitry A. Kazakov
2001-12-17 12:16 ` Thomas Koenig
2001-12-17 14:30 ` Dmitry A. Kazakov
2001-12-27 17:18 ` Steven Deller
2001-12-15 7:07 ` Steven Deller
2001-12-17 12:31 ` Dmitry A. Kazakov
2001-12-17 13:46 ` Thomas Koenig
2001-12-17 15:00 ` Dmitry A. Kazakov
2001-12-17 16:38 ` Thomas Koenig
2001-12-17 21:07 ` Britt Snodgrass
2001-12-20 13:44 ` Dmitry A. Kazakov
2001-12-13 19:33 ` Mark Lundquist
2001-12-13 22:15 ` Nick Roberts
2001-12-14 20:20 ` Mark Lundquist
2001-12-10 23:31 ` Mark Lundquist
2001-12-10 13:57 ` Ian
2001-12-10 17:24 ` Wes Groleau
2001-12-10 20:38 ` Britt Snodgrass
2001-12-11 13:11 Mike Brenner
2001-12-11 17:03 ` Mark Lundquist
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