From: Dmitry A. Kazakov <mailbox@dmitry-kazakov.de>
Subject: Re: How do I create an object instance from a tag?
Date: Wed, 19 Feb 2003 10:18:56 +0100
Date: 2003-02-19T10:18:56+01:00 [thread overview]
Message-ID: <nki65vk98bsb0vrqat5tq5vuidan7cae30@4ax.com> (raw)
In-Reply-To: WXB4a.154645$2H6.2894@sccrnsc04
On Wed, 19 Feb 2003 02:27:03 GMT, "Steve" <nospam_steved94@attbi.com>
wrote:
>What I "thought" was intuitive was something like:
> myTag : Tags.Tag;
> value : data_type'class;
> for Value'Tag use myTag;
>
>Of course that doesn't work.
IMO, the following is more consistent:
myTag : Tags.Tag := ...;
value : data_type'class (myTag);
and for dispatching:
myTag : Tags.Tag := ...;
value : data_type'class (myTag) := Create_Value;
or fully dynamically (qualified expression):
myTag : Tags.Tag := ...;
value : data_type'class :=
data_type'class (myTag)'(Create_Value);
---
Regards,
Dmitry Kazakov
www.dmitry-kazakov.de
next prev parent reply other threads:[~2003-02-19 9:18 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-02-17 20:25 How do I create an object instance from a tag? Steve
2003-02-18 8:29 ` Dmitry A. Kazakov
2003-02-18 18:14 ` Randy Brukardt
2003-02-19 2:27 ` Steve
2003-02-19 9:18 ` Dmitry A. Kazakov [this message]
2003-02-20 15:38 ` Julio Cano
-- strict thread matches above, loose matches on Subject: below --
2003-02-19 9:39 Grein, Christoph
2003-02-19 13:26 ` Dmitry A. Kazakov
2003-02-19 18:36 ` Randy Brukardt
2003-02-20 9:15 ` Dmitry A. Kazakov
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