From: Martin Krischik <krischik@users.sourceforge.net>
Subject: Re: Is T an ancestor of T?
Date: Fri, 15 Oct 2004 18:55:22 +0200
Date: 2004-10-15T18:55:22+02:00 [thread overview]
Message-ID: <2668948.gJfALsUrHD@linux1.krischik.com> (raw)
In-Reply-To: ckot3m$hek$1@a1-hrz.uni-duisburg.de
Georg Bauhaus wrote:
> Martin Krischik <krischik@users.sourceforge.net> wrote:
>
> :> 'class as return type of constructor functions creates a number of
> :> not-so-nice conversion necessities that I'd like to avoid.
> :
> : I thought as an example. Not to actually use this constructor pattern.
>
> Interestingly, GNAT complains if T is derived from some other
> type Base. For example,
>
> function Make return T'Class is
> begin
> return T'(T with N => 42);
> end Make;
>
>
> 7. return T'(T with N => 42);
> |
> >>> expect ancestor type of "T"
>
> (Same for specific T.)
Well T is not an ancestor of T. T is T itself. You might want try the
example with a tagged type which actually has a parent to see the
difference.
With Regards
Martin
--
mailto://krischik@users.sourceforge.net
http://www.ada.krischik.com
next prev parent reply other threads:[~2004-10-15 16:55 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-12 1:31 record extension aggregate for returned type legal? Georg Bauhaus
2004-10-12 8:04 ` Martin Krischik
2004-10-12 14:36 ` Georg Bauhaus
[not found] ` <1940150.rU8f1KaX3L@linux1.krischik.com>
2004-10-12 20:24 ` Georg Bauhaus
2004-10-13 7:52 ` Martin Krischik
[not found] ` <ckjlhm$2hh$1@a1-hrz.uni-duisburg.de>
[not found] ` <ukhbd.106086$dP1.396181@newsc.telia.net>
2004-10-14 0:29 ` Is T an ancestor of T? Georg Bauhaus
2004-10-14 8:54 ` Is T an ancestor of T? (was: Re: record extension aggregate for returned type legal?) Martin Krischik
[not found] ` <ckot3m$hek$1@a1-hrz.uni-duisburg.de>
2004-10-15 16:55 ` Martin Krischik [this message]
2004-10-15 17:19 ` Is T an ancestor of T? Georg Bauhaus
2004-10-16 14:37 ` Martin Krischik
2004-10-13 16:18 ` record extension aggregate for returned type legal? Jean-Pierre Rosen
[not found] ` <87ekk0hvfq.fsf@beeblebrox.rfc1149.net>
2004-10-15 16:51 ` Martin Krischik
[not found] ` <t7tokc.2he.ln@skymaster>
2004-10-15 17:22 ` Georg Bauhaus
2004-10-14 20:04 ` Simon Wright
-- strict thread matches above, loose matches on Subject: below --
2004-10-18 5:55 Is T an ancestor of T? Christoph Karl Walter Grein
2004-10-20 14:02 ` Georg Bauhaus
2004-10-20 16:18 ` Björn Persson
2004-10-20 21:41 ` Georg Bauhaus
2004-10-20 23:33 ` Björn Persson
2004-10-22 2:27 ` Georg Bauhaus
2004-10-23 16:55 ` Björn Persson
2004-10-26 0:37 ` Randy Brukardt
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