From: Adam Beneschan <adam@irvine.com>
Subject: Re: Equivalent of dynamic_cast (downcast) for tagged types
Date: Thu, 27 Jan 2011 11:33:30 -0800 (PST)
Date: 2011-01-27T11:33:30-08:00 [thread overview]
Message-ID: <998aeb0e-6a1d-46b6-9c3e-abb3c1ef255c@i39g2000prd.googlegroups.com> (raw)
In-Reply-To: 375fb596-ab12-4cb0-a190-53d62b94b2e4@e9g2000vbi.googlegroups.com
On Jan 27, 7:46 am, Maciej Sobczak <see.my.homep...@gmail.com> wrote:
> Hi,
>
> Unfortunately I need to HACK some equivalent of dynamic_cast in Ada.
>
> There is a limited tagged type T deriving from Limited_Controlled and
> Some_Interface as well.
> There is also a procedure like this:
>
> procedure Foo (X : in Some_Interface'Class);
>
> Inside Foo I would like to check if X is indeed T
if X in T
> and if so, I would
> like to dynamic_cast to it and execute some operation on T.
then Execute_Some_Operation_On (T(X));
end if;
Wonderful, no? In Ada you get to write pretty much what you were
thinking of doing. The C++ equivalent is quite elegant, if you
consider the number of ugly punctuation characters and cryptically-
named built-in identifiers to be a measure of elegance.
-- Adam
prev parent reply other threads:[~2011-01-27 19:33 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-27 15:46 Equivalent of dynamic_cast (downcast) for tagged types Maciej Sobczak
2011-01-27 16:18 ` Dmitry A. Kazakov
2011-01-27 17:10 ` J-P. Rosen
2011-01-27 17:35 ` Dmitry A. Kazakov
2011-01-27 22:49 ` Maciej Sobczak
2011-01-27 17:50 ` Georg Bauhaus
2011-01-27 22:35 ` Maciej Sobczak
2011-01-28 5:07 ` Yannick Duchêne (Hibou57)
2011-01-28 9:16 ` Dmitry A. Kazakov
2011-01-28 13:11 ` AdaMagica
2011-01-28 14:13 ` Dmitry A. Kazakov
2011-01-28 23:51 ` Randy Brukardt
2011-01-29 0:55 ` Adam Beneschan
2011-01-28 16:44 ` Adam Beneschan
2011-01-28 17:21 ` Dmitry A. Kazakov
2011-01-29 0:12 ` Randy Brukardt
2011-01-29 8:47 ` Dmitry A. Kazakov
2011-01-28 17:33 ` Adam Beneschan
2011-01-28 15:13 ` Maciej Sobczak
2011-01-28 17:47 ` Robert A Duff
2011-01-28 22:04 ` Maciej Sobczak
2011-01-30 20:22 ` Stephen Leake
2011-01-31 9:04 ` AdaCore, user community and communication channels Maciej Sobczak
2011-01-31 10:42 ` Georg Bauhaus
2011-01-27 19:33 ` Adam Beneschan [this message]
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