From: Ludovic Brenta <ludovic@ludovic-brenta.org>
Subject: Re: Discriminants of tagged types
Date: Wed, 27 Oct 2010 23:23:56 +0200
Date: 2010-10-27T23:23:56+02:00 [thread overview]
Message-ID: <877hh3qqhf.fsf@ludovic-brenta.org> (raw)
In-Reply-To: 3243de1d-c6b4-4845-ab5f-28ea4e9f5738@c20g2000yqj.googlegroups.com
Maciej Sobczak writes on comp.lang.ada:
> Yannick Duchêne wrote:
>
>> > as non-limited tagged types are nonsense anyway.
>>
>> Why ?
>
> Because tagged types usually represent entities that are bound to some
> resources and copying them is somewhere between cumbersome and
> impossible. Communication channels, database connections, etc.
Funny, I usually do the exact opposite.
I usually represent these things with untagged limited types. Why would
these objects need to be tagged? Conversely, my tagged types do not
necessarily (or usually, for that matter) represent resources; they
represent data with behavior or GUI widgets. They do not always have to
be limited but they have to be tagged.
--
Ludovic Brenta.
next prev parent reply other threads:[~2010-10-27 21:23 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-27 12:16 Discriminants of tagged types Maciej Sobczak
2010-10-27 12:34 ` Ludovic Brenta
2010-10-27 13:19 ` Dmitry A. Kazakov
2010-10-27 13:52 ` Robert A Duff
2010-10-27 14:12 ` Dmitry A. Kazakov
2010-10-27 13:44 ` Robert A Duff
2010-10-27 15:06 ` Adam Beneschan
2010-10-27 15:58 ` Yannick Duchêne (Hibou57)
2010-10-27 16:35 ` Vinzent Hoefler
2010-10-27 17:58 ` J-P. Rosen
2010-10-27 20:18 ` Yannick Duchêne (Hibou57)
2010-10-27 20:26 ` Adam Beneschan
2010-10-27 22:07 ` Yannick Duchêne (Hibou57)
2010-10-27 22:42 ` Adam Beneschan
2010-10-27 15:13 ` Maciej Sobczak
2010-10-27 16:02 ` Yannick Duchêne (Hibou57)
2010-10-27 21:13 ` Maciej Sobczak
2010-10-27 21:23 ` Ludovic Brenta [this message]
2010-10-28 8:38 ` Maciej Sobczak
2010-10-27 21:25 ` Vinzent Hoefler
2010-10-28 7:53 ` Dmitry A. Kazakov
2010-10-28 8:50 ` Maciej Sobczak
2010-10-28 10:28 ` Dmitry A. Kazakov
2010-10-28 17:48 ` Yannick Duchêne (Hibou57)
2010-10-29 18:59 ` Vinzent Hoefler
2010-10-30 21:05 ` Maciej Sobczak
2010-10-30 21:21 ` Vinzent Hoefler
2010-10-30 22:01 ` Yannick Duchêne (Hibou57)
2010-10-31 16:20 ` Maciej Sobczak
2010-10-31 17:04 ` Yannick Duchêne (Hibou57)
2010-10-31 18:36 ` Shark8
2010-10-31 21:06 ` Maciej Sobczak
2010-11-01 0:44 ` Shark8
2010-11-01 9:41 ` Maciej Sobczak
2010-10-27 16:06 ` Robert A Duff
2010-10-27 16:34 ` Yannick Duchêne (Hibou57)
2010-10-27 21:05 ` Maciej Sobczak
2010-10-28 0:35 ` Robert A Duff
2010-10-28 8:55 ` Maciej Sobczak
2010-10-27 21:28 ` Simon Wright
2010-10-27 13:54 ` J-P. Rosen
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