From: Robert A Duff <bobduff@shell01.TheWorld.com>
Subject: Re: Inherited Methods and such
Date: Sat, 29 Sep 2007 19:39:47 -0400
Date: 2007-09-29T19:39:47-04:00 [thread overview]
Message-ID: <wccwsu9vy64.fsf@shell01.TheWorld.com> (raw)
In-Reply-To: 1191098907.689596.43970@k79g2000hse.googlegroups.com
Maciej Sobczak <see.my.homepage@gmail.com> writes:
> On 28 Wrz, 22:44, Maciej Sobczak <see.my.homep...@gmail.com> wrote:
>
>> Yes, this example is convincing.
>
> After thinking about it for a while, I see one point missing:
> accessing T'Class from the supertype (T's) constructor. I need it to
> register the new object in the polymorphic container.
You can convert the result object to T'Class.
You can create an access-to-T'Class value.
I don't see the problem.
But if you dispatch "too early", things can get confusing.
One limitation of my example: it doesn't work if the parent
type is abstract. In a from-scratch language design, I think
I would solve that problem by allowing the creation of objects
of abstract type. And constructor functions returns such
objects. But don't allow conversion of such objects to
class-wide (to avoid dispatching (to abstract subprograms)).
What do you think about that? It's not Ada, of course.
- Bob
next prev parent reply other threads:[~2007-09-29 23:39 UTC|newest]
Thread overview: 74+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-17 14:26 Inherited Methods and such shaunpatterson
2007-09-17 15:11 ` Ludovic Brenta
2007-09-17 16:46 ` shaunpatterson
2007-09-17 19:07 ` Ludovic Brenta
2007-09-17 20:22 ` Maciej Sobczak
2007-09-17 21:07 ` Ludovic Brenta
2007-09-18 14:27 ` Maciej Sobczak
2007-09-18 14:27 ` Maciej Sobczak
2007-09-18 15:25 ` Dmitry A. Kazakov
2007-09-18 18:34 ` Ludovic Brenta
2007-09-18 19:29 ` Dmitry A. Kazakov
2007-09-18 19:39 ` Ludovic Brenta
2007-09-18 20:49 ` Dmitry A. Kazakov
2007-09-18 21:10 ` Simon Wright
2007-09-18 20:39 ` Maciej Sobczak
2007-09-18 21:12 ` Dmitry A. Kazakov
2007-09-19 14:49 ` Maciej Sobczak
2007-09-19 15:16 ` Dmitry A. Kazakov
2007-09-19 22:13 ` Maciej Sobczak
2007-09-20 8:12 ` Dmitry A. Kazakov
2007-09-20 13:52 ` Maciej Sobczak
2007-09-20 16:22 ` Dmitry A. Kazakov
2007-09-20 20:45 ` Maciej Sobczak
2007-09-21 18:59 ` Dmitry A. Kazakov
2007-09-21 21:02 ` Maciej Sobczak
2007-09-22 8:48 ` Dmitry A. Kazakov
2007-09-22 21:53 ` Maciej Sobczak
2007-09-23 8:41 ` Dmitry A. Kazakov
2007-09-23 20:36 ` Maciej Sobczak
2007-09-24 9:32 ` Dmitry A. Kazakov
2007-09-24 15:02 ` Maciej Sobczak
2007-09-24 19:20 ` Dmitry A. Kazakov
2007-09-25 20:53 ` Maciej Sobczak
2007-09-26 10:42 ` Dmitry A. Kazakov
2007-09-26 21:31 ` Maciej Sobczak
2007-09-27 15:02 ` Dmitry A. Kazakov
2007-09-27 21:02 ` Maciej Sobczak
2007-09-26 12:21 ` Robert A Duff
2007-09-26 12:54 ` Dmitry A. Kazakov
2007-09-26 21:37 ` Maciej Sobczak
2007-09-26 23:47 ` Randy Brukardt
2007-09-27 21:08 ` Maciej Sobczak
2007-09-28 0:44 ` Randy Brukardt
2007-09-28 20:32 ` Maciej Sobczak
2007-09-28 22:35 ` Randy Brukardt
2007-09-29 23:58 ` Robert A Duff
2007-09-26 12:26 ` Robert A Duff
2007-09-26 21:50 ` Maciej Sobczak
2007-09-26 22:20 ` Ray Blaak
2007-09-27 0:01 ` Randy Brukardt
2007-09-27 13:39 ` Robert A Duff
2007-09-27 14:54 ` Dmitry A. Kazakov
2007-09-28 0:35 ` Randy Brukardt
[not found] ` <7p6gc1s9imfa$.kmvwf5zyf8e9.dlg@40tude.net>
2007-09-28 22:53 ` Randy Brukardt
2007-09-29 20:37 ` Dmitry A. Kazakov
2007-09-27 21:23 ` Maciej Sobczak
2007-09-28 19:12 ` Robert A Duff
2007-09-28 19:02 ` Robert A Duff
2007-09-28 19:42 ` Robert A Duff
2007-09-28 20:44 ` Maciej Sobczak
2007-09-28 22:40 ` Randy Brukardt
2007-09-29 20:35 ` Dmitry A. Kazakov
2007-09-29 20:52 ` Maciej Sobczak
2007-09-30 8:38 ` Dmitry A. Kazakov
2007-09-29 23:47 ` Robert A Duff
2007-09-29 20:48 ` Maciej Sobczak
2007-09-29 23:39 ` Robert A Duff [this message]
2007-09-30 8:38 ` Dmitry A. Kazakov
2007-09-29 23:42 ` Robert A Duff
2007-09-25 1:59 ` Randy Brukardt
2007-09-25 8:59 ` Dmitry A. Kazakov
2007-09-25 21:02 ` Randy Brukardt
2007-09-26 12:42 ` Dmitry A. Kazakov
2007-09-18 4:03 ` Steve
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