From: Georg Bauhaus <bauhaus.rm.tsoh@maps.futureapps.de>
Subject: Re: Self pointer in limited record
Date: Sat, 01 Sep 2007 16:15:44 +0200
Date: 2007-09-01T16:10:48+02:00 [thread overview]
Message-ID: <46d972e8$0$30384$9b4e6d93@newsspool4.arcor-online.net> (raw)
In-Reply-To: <137iu0lr82dtb$.wqy3zjz2vr9q.dlg@40tude.net>
Dmitry A. Kazakov wrote:
> On Sat, 01 Sep 2007 15:33:09 +0200, Georg Bauhaus wrote:
>
>> (The true O-O programmer might suggest that we should simply
>> pass an additional object-as-module parameter to every
>> package subprogram... )
>
> Yes, it is better to keep packages stateless.
Though by using tagged objects for a module
and not a stateful package, you will dismiss a few
properties of packages that can be helpful when
modeling singleton modules:
1 - If there is just one object in the problem domain a
package is a perfect match and will be straight forward, safe,
and simple to implement. No need to worry about static and
dynamic scopes of module-objects passed around because
there is just this one named package for the problem
domain object.
2 - Nesting packages is an option, a distinguishing feature
of Ada IMO; a package nested inside a subprogram is a
simple solution to the life cycle problem of module style
objects.
For example, when a singleton object is needed only while
a subprogram S is executing, why not just create a simple
package within S, that is, right where it is needed, and
not anywhere else?
next prev parent reply other threads:[~2007-09-01 14:15 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-04 19:31 Self pointer in limited record Maciej Sobczak
2007-07-05 8:22 ` Dmitry A. Kazakov
2007-07-05 10:35 ` Maciej Sobczak
2007-07-05 11:01 ` Pascal Obry
2007-07-05 11:14 ` Georg Bauhaus
2007-07-05 12:36 ` Dmitry A. Kazakov
2007-08-31 16:47 ` amado.alves
2007-08-31 17:09 ` Pascal Obry
2007-08-31 17:37 ` Adam Beneschan
2007-08-31 18:26 ` Jeffrey R. Carter
2007-08-31 19:33 ` Dmitry A. Kazakov
2007-09-01 13:33 ` Georg Bauhaus
2007-09-01 13:46 ` Dmitry A. Kazakov
2007-09-01 14:15 ` Georg Bauhaus [this message]
2007-09-01 16:03 ` Dmitry A. Kazakov
2007-09-01 19:49 ` Georg Bauhaus
2007-09-01 20:09 ` Dmitry A. Kazakov
2007-09-02 21:37 ` Georg Bauhaus
[not found] ` <re7ei5lc7dzf$.11qtcnh35jmzg$.dlg@40tude.net>
2007-09-03 10:51 ` Georg Bauhaus
2007-09-03 14:17 ` Dmitry A. Kazakov
2007-09-03 15:55 ` Jean-Pierre Rosen
2007-09-03 19:17 ` Dmitry A. Kazakov
2007-09-03 19:32 ` Markus E L
2007-09-03 20:14 ` Georg Bauhaus
2007-09-04 8:24 ` Dmitry A. Kazakov
2007-09-04 9:36 ` Jean-Pierre Rosen
2007-09-04 10:14 ` Dmitry A. Kazakov
2007-09-05 10:49 ` Georg Bauhaus
2007-09-05 12:04 ` Dmitry A. Kazakov
2007-09-05 13:12 ` Jean-Pierre Rosen
2007-09-05 15:10 ` Dmitry A. Kazakov
2007-09-05 16:25 ` Jean-Pierre Rosen
2007-09-05 19:52 ` Dmitry A. Kazakov
2007-09-06 7:19 ` Jean-Pierre Rosen
2007-09-06 9:28 ` Dmitry A. Kazakov
2007-09-06 11:53 ` Jean-Pierre Rosen
2007-09-06 15:35 ` Dmitry A. Kazakov
2007-09-05 18:31 ` Georg Bauhaus
2007-09-05 19:52 ` Dmitry A. Kazakov
2007-09-05 21:38 ` Georg Bauhaus
2007-09-06 7:37 ` Dmitry A. Kazakov
2007-09-06 10:26 ` Georg Bauhaus
2007-09-06 12:25 ` Dmitry A. Kazakov
2007-09-08 1:27 ` Randy Brukardt
2007-09-06 9:14 ` Markus E L
2007-09-06 9:48 ` Dmitry A. Kazakov
2007-09-04 8:23 ` Jean-Pierre Rosen
2007-10-31 23:59 ` adaworks
2007-09-03 20:38 ` Georg Bauhaus
2007-09-04 8:24 ` Dmitry A. Kazakov
2007-09-03 7:54 ` Jean-Pierre Rosen
2007-09-01 15:33 ` Markus E L
2007-09-04 14:55 ` Adam Beneschan
2007-09-04 15:09 ` Jean-Pierre Rosen
2007-09-08 1:36 ` Randy Brukardt
2007-09-04 17:31 ` Georg Bauhaus
2007-09-08 1:16 ` Randy Brukardt
2007-09-10 16:27 ` amado.alves
2007-09-10 17:13 ` Adam Beneschan
2007-09-10 19:00 ` Dmitry A. Kazakov
2007-09-11 3:12 ` Randy Brukardt
2007-09-11 9:38 ` Dmitry A. Kazakov
2007-09-12 21:57 ` Randy Brukardt
2007-09-13 8:03 ` Dmitry A. Kazakov
2007-09-13 21:37 ` Randy Brukardt
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