From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Subject: Re: Ada-Singleton-Why does it work like this?
Date: Wed, 25 Mar 2009 10:30:24 +0100
Date: 2009-03-25T10:30:24+01:00 [thread overview]
Message-ID: <fubm0mevtul8.1obf4q1pf440d.dlg@40tude.net> (raw)
In-Reply-To: 6d2b2c67-22fb-4283-87ab-58357e47d5ca@v39g2000yqm.googlegroups.com
On Tue, 24 Mar 2009 17:10:11 -0700 (PDT), Martin wrote:
> On Mar 24, 8:47�pm, "Jeffrey R. Carter"
>> This is a very poor solution to the problem. A much simpler solution is
>>
>> package Singleton is
>> � � procedure Set (Value_1 : in Integer; Value_2 : in Integer);
>>
>> � � procedure Print;
>> end Singleton;
>
> But you can not derive a class from this:
Firstly you can. There are child packages in Ada, they are equivalent to
derivation.
Secondly, you may not because it is a singleton. A derived variant would be
meaningless without making an instance of, which would be *another*
instance of now non-singleton.
--
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de
next prev parent reply other threads:[~2009-03-25 9:30 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-24 19:01 Ada-Singleton-Why does it work like this? patrick.gunia
2009-03-24 19:10 ` Pascal Obry
2009-03-24 20:47 ` Jeffrey R. Carter
2009-03-25 0:10 ` Martin
2009-03-25 0:41 ` Jeffrey R. Carter
2009-03-25 9:30 ` Dmitry A. Kazakov [this message]
2009-03-26 8:55 ` Martin
2009-03-26 9:28 ` Dmitry A. Kazakov
2009-03-26 13:39 ` Maciej Sobczak
2009-03-26 14:07 ` Georg Bauhaus
2009-03-26 14:33 ` Dmitry A. Kazakov
2009-03-26 15:22 ` Georg Bauhaus
2009-03-26 16:31 ` Dmitry A. Kazakov
2009-03-26 14:28 ` Dmitry A. Kazakov
2009-03-26 22:00 ` Maciej Sobczak
2009-03-27 10:02 ` Dmitry A. Kazakov
2009-03-25 22:29 ` sjw
2009-03-24 20:52 ` Ludovic Brenta
2009-03-25 9:59 ` patrick.gunia
2009-03-25 10:29 ` Jean-Pierre Rosen
2009-03-25 11:26 ` Georg Bauhaus
2009-03-25 11:49 ` patrick.gunia
2009-03-29 7:29 ` Jacob Sparre Andersen
2009-03-24 21:21 ` Dmitry A. Kazakov
2009-03-25 10:07 ` patrick.gunia
2009-03-25 10:57 ` patrick.gunia
2009-03-25 11:40 ` Georg Bauhaus
2009-03-25 11:46 ` Ludovic Brenta
2009-03-25 11:55 ` patrick.gunia
2009-03-25 14:10 ` patrick.gunia
2009-03-25 14:40 ` Ludovic Brenta
2009-03-25 15:16 ` Adam Beneschan
2009-03-25 15:19 ` patrick.gunia
2009-03-25 16:52 ` Georg Bauhaus
2009-03-25 11:10 ` Dmitry A. Kazakov
2009-03-25 11:37 ` patrick.gunia
2009-03-25 12:07 ` Ludovic Brenta
2009-03-25 15:00 ` Robert A Duff
2009-03-25 11:17 ` Jean-Pierre Rosen
2009-03-26 9:04 ` Martin
2009-03-25 11:38 ` Ludovic Brenta
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