From: Robert A Duff <bobduff@shell01.TheWorld.com>
Subject: Re: pointer questions
Date: 27 Oct 2005 10:14:40 -0400
Date: 2005-10-27T10:14:40-04:00 [thread overview]
Message-ID: <wccr7a7rqr3.fsf@shell01.TheWorld.com> (raw)
In-Reply-To: djq9lc$1h9a$1@node3.news.atman.pl
Szymon Guz <alpha@skynet.org.pl_WITHOUT> writes:
> Well, that's how I thought but I wanted to ask. The problem that I want
> to solve is how to create a property in type like that ones in
> Delphi|Builder, so I have defined the property name, value, read and
> write functions. I thought that it could be done by defining a generic
> structure like this:
>
> Name
> Value
> Get_Function
> Set_Function
>
> when Value is a pointer to value, Get and Set are pointers to function
> for setting and getting the value. That's why I thought about universal
> variable pointer.
I'm not sure I fully understand what you're trying to do, but I suspect
you can do it with a hierarchy of tagged types. You will have an
access-to-class-wide type, which is sort of like "void *", but it's
safe.
Alternatively, a generic package might do what you want.
You would have one instance for each type of Value you
want to store. This method might be safer, but less flexible.
- Bob
next prev parent reply other threads:[~2005-10-27 14:14 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-10-26 23:01 pointer questions Szymon Guz
2005-10-26 23:51 ` Gene
2005-10-26 23:58 ` tmoran
2005-10-27 1:12 ` Stephen Leake
2005-10-27 2:30 ` Steve
2005-10-27 5:56 ` Jeffrey R. Carter
2005-10-27 10:19 ` Szymon Guz
2005-10-27 14:14 ` Robert A Duff [this message]
2005-11-07 4:21 ` Dave Thompson
2005-10-27 14:11 ` Robert A Duff
2005-10-27 15:13 ` Marc A. Criley
2005-10-27 18:53 ` Jeffrey R. Carter
2005-10-27 17:29 ` Martin Dowie
2005-10-27 18:28 ` Marc A. Criley
2005-10-27 19:28 ` Martin Dowie
2005-10-28 0:12 ` Robert A Duff
2005-10-28 11:57 ` Dr. Adrian Wrigley
2005-10-28 21:26 ` Jeffrey R. Carter
2005-10-30 22:26 ` Robert A Duff
2005-10-31 6:21 ` Jeffrey R. Carter
2005-11-02 0:52 ` Dr. Adrian Wrigley
2005-11-02 3:46 ` Jeffrey R. Carter
2005-11-02 11:16 ` Dr. Adrian Wrigley
2005-11-02 13:39 ` Robert A Duff
2005-11-02 15:34 ` Bob Spooner
2005-11-02 18:59 ` Björn Persson
2005-10-27 18:43 ` Jeffrey R. Carter
2005-10-28 0:42 ` Robert A Duff
2005-10-28 5:58 ` Martin Dowie
2005-10-28 21:24 ` Jeffrey R. Carter
2005-10-28 11:53 ` David
2005-10-29 12:25 ` Simon Wright
2005-10-27 17:19 ` Martin Krischik
2005-11-07 4:21 ` Dave Thompson
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