From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Subject: Re: Constant record components
Date: Mon, 3 Jul 2006 09:50:31 +0200
Date: 2006-07-03T09:50:31+02:00 [thread overview]
Message-ID: <t7hmlpeqyass.1fjxzy2pl8z82$.dlg@40tude.net> (raw)
In-Reply-To: 12afs64kh432q0e@corp.supernews.com
On Sun, 2 Jul 2006 09:13:54 -0700, ME wrote:
> "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> wrote in message
> news:1loq7utmaxvll$.yqsxj5edzqgv.dlg@40tude.net...
>> On Sat, 1 Jul 2006 09:25:06 -0700, ME wrote:
>>
>>> What was the rationale for prohibiting constant record components?
>>
>> Initialization and composition issues. Then often it is argued that
>> discriminants are, though limited.
> What were these issues?
You should ask language lawyers. Consider aggregates:
type Semimutable is record
A : constant Integer := 10;
B : Integer;
end record;
X : Semimutable := (A => 20, B => 40); -- Constraint_Error?
Y : Semimutable := (A => 10, B => 40);
It might become tricky when A is a composite or private type. Should it
finalize the component and initialize it *same*? In which sense same? Does
it skip A upon assignments?
--
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de
next prev parent reply other threads:[~2006-07-03 7:50 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <12ad8guf3sg1o0d@corp.supernews.com>
2006-07-01 17:06 ` Constant record components Dmitry A. Kazakov
2006-07-01 17:37 ` ME
2006-07-01 18:33 ` Georg Bauhaus
2006-07-01 21:44 ` Jeffrey R. Carter
2006-07-02 9:18 ` Georg Bauhaus
2006-07-02 16:13 ` ME
2006-07-03 7:50 ` Dmitry A. Kazakov [this message]
2006-07-03 11:46 ` Craig Carey
2006-07-04 0:06 ` M E Leypold
2006-07-03 16:31 ` ME
2006-07-03 23:53 ` Randy Brukardt
2006-07-04 1:59 ` Craig Carey
2006-07-04 7:25 ` ME
2006-07-05 21:55 ` Randy Brukardt
2006-07-06 0:59 ` tmoran
2006-07-06 7:47 ` Jean-Pierre Rosen
2006-07-06 22:29 ` Randy Brukardt
2006-07-07 4:34 ` Jeffrey R. Carter
2006-07-07 5:39 ` ME
2006-07-07 9:15 ` Georg Bauhaus
2006-07-08 16:13 ` ME
2006-07-08 17:14 ` Georg Bauhaus
2006-07-13 6:58 ` ME
2006-07-13 8:39 ` Georg Bauhaus
2006-07-07 21:04 ` Randy Brukardt
2006-07-14 8:15 ` Craig Carey
2006-07-14 12:51 ` Craig Carey
2006-07-15 3:45 ` ME
2006-07-04 0:08 ` M E Leypold
2006-07-02 5:52 ` Craig Carey
replies disabled
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox