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From: "Hibou57 (Yannick Duchêne)" <yannick_duchene@yahoo.fr>
Subject: Re: Copying rows in a two dimensional array.
Date: Wed, 3 Feb 2010 20:13:20 -0800 (PST)
Date: 2010-02-03T20:13:20-08:00	[thread overview]
Message-ID: <a5504422-655e-47fe-86fd-2272edf1ab6e@g29g2000yqe.googlegroups.com> (raw)
In-Reply-To: 4b6637a1$0$4586$4d3efbfe@news.sover.net

On 1 fév, 03:11, "Peter C. Chapin" <pcc482...@gmail.com> wrote:
> Apparently the component type of an array needs to be fully constrained (which
> again makes sense) yet I don't know the size
That's what generics are made for.
But you will have a single matrix type of a fixed size.

I you don't want a fixed size type, the best I will think about, would
be to create an abstract matrix type which will be implemented on a
one dimensional array. You could use slice in the implementation.

Ex. for a 2x2 matrix, you will use a 1 .. 4 array of Float. You may
define a swap row method which will move items from 1 .. 2 to 3 .. 4
and vice-versa.

You will be able to use slice optimized operations.

Tell me if you need a more concrete example (I confess I'm a bit terse
here).



  parent reply	other threads:[~2010-02-04  4:13 UTC|newest]

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-02-01  2:11 Copying rows in a two dimensional array Peter C. Chapin
2010-02-01  4:42 ` Jeffrey R. Carter
2010-02-01  6:55 ` Niklas Holsti
2010-02-01 23:36   ` Peter C. Chapin
2010-02-04  4:27   ` Hibou57 (Yannick Duchêne)
2010-02-01  8:37 ` Dmitry A. Kazakov
2010-02-02  0:11   ` Randy Brukardt
2010-02-07 16:13     ` Robert A Duff
2010-02-08  6:30       ` tmoran
2010-02-08 13:15         ` Robert A Duff
2010-02-08 13:45           ` Dmitry A. Kazakov
2010-02-08 21:20             ` Robert A Duff
2010-02-08 23:26               ` (see below)
2010-02-09  0:36                 ` Randy Brukardt
2010-02-09  1:03                   ` (see below)
2010-02-09  7:11                   ` Pascal Obry
2010-02-09  8:14                     ` AdaMagica
2010-02-09 14:33                 ` Robert A Duff
2010-02-09  1:05               ` Adam Beneschan
2010-02-09 14:45                 ` Robert A Duff
2010-02-09 18:50                   ` tmoran
2010-02-09 19:51                   ` Pascal Obry
2010-02-09 23:03                     ` Robert A Duff
2010-02-08 18:53           ` tmoran
2010-02-08 21:14             ` Robert A Duff
2010-02-08 21:29               ` Pascal Obry
2010-02-09  8:56                 ` Jean-Pierre Rosen
2010-02-09  9:14                   ` AdaMagica
2010-02-09 11:19                     ` Jean-Pierre Rosen
2010-02-09 14:26                 ` Robert A Duff
2010-02-09  6:34               ` tmoran
2010-02-09 14:29                 ` Robert A Duff
2010-02-09 18:49                   ` tmoran
2010-02-09 22:58                     ` Robert A Duff
2010-02-01 22:10 ` Jerry
2010-02-02  0:07   ` Randy Brukardt
2010-02-02  8:52   ` Jean-Pierre Rosen
2010-02-02 22:23     ` Jerry
2010-02-03  1:24       ` Adam Beneschan
2010-02-04  4:42     ` Hibou57 (Yannick Duchêne)
2010-02-14  0:42     ` jonathan
2010-02-14  1:54       ` Hibou57 (Yannick Duchêne)
2010-02-14 16:16         ` jonathan
2010-03-22  8:56           ` Ole-Hjalmar Kristensen
2010-02-16  6:51     ` David Thompson
2010-02-04  4:13 ` Hibou57 (Yannick Duchêne) [this message]
2010-02-04  9:10   ` Dmitry A. Kazakov
2010-02-04  9:23     ` Hibou57 (Yannick Duchêne)
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