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From: Justin Gombos <rpbkbq.xax.gld@uluv.kbq>
Subject: Re: private types
Date: Fri, 17 Mar 2006 23:44:08 GMT
Date: 2006-03-17T23:44:08+00:00	[thread overview]
Message-ID: <cRHSf.1991$TK2.563@trnddc07> (raw)
In-Reply-To: wccwtetciq0.fsf@shell01.TheWorld.com

On 2006-03-17, Robert A Duff <bobduff@shell01.TheWorld.com> wrote:
> Justin Gombos <rpbkbq.xax.gld@uluv.kbq> writes:
>
> I'm not sure what the right answer is, but surely all the arguments
> for and against dummy values apply equally to access types.

I don't agree with that.  Null is a standard abnormal object for
access types in all languages, and can never be taken for something
valid.  Null pointers are quickly detected, and easily understood.

But with any other type, null (zero) is most likely a valid value.
This is probably why the ARM states:

      The implicit initial value for an access subtype is the null
      value of the access type.

But makes no such rule for other types.

-- 
PM instructions: do a C4esar Ciph3r on my address; retain punctuation.



  reply	other threads:[~2006-03-17 23:44 UTC|newest]

Thread overview: 93+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-03-13 19:58 private types ada_student
2006-03-13 20:27 ` Mark Lorenzen
2006-03-13 21:05   ` Pascal Obry
2006-03-13 21:07   ` ada_student
2006-03-13 21:45     ` Simon Wright
2006-03-14  4:51 ` Jeffrey R. Carter
2006-03-14  7:44   ` Brian May
2006-03-14  8:25     ` Ludovic Brenta
2006-03-14  8:47     ` Alex R. Mosteo
2006-03-17  4:33     ` Justin Gombos
2006-03-17  5:17       ` Brian May
2006-03-17 22:50         ` Justin Gombos
2006-03-18  1:17         ` Randy Brukardt
2006-03-18  2:17           ` Justin Gombos
2006-03-21  0:08             ` Randy Brukardt
2006-03-18  8:39           ` Uninitialized variables (was: Re: private types) Dirk Craeynest
2006-03-18 14:06             ` Gautier
2006-03-18 14:36               ` Uninitialized variables Jeffrey Creem
2006-03-21  0:22             ` Uninitialized variables (was: Re: private types) Randy Brukardt
2006-03-21  0:38             ` Randy Brukardt
2006-03-18 12:06           ` private types Martin Dowie
2006-03-18 12:47           ` Robert A Duff
2006-03-17  7:40       ` Maciej Sobczak
2006-03-17 16:41         ` Frank J. Lhota
2006-03-17 23:36         ` Justin Gombos
2006-03-18  1:32           ` Randy Brukardt
2006-03-18  3:21             ` Handling invalid objects Justin Gombos
2006-03-18  7:35               ` Jeffrey R. Carter
2006-03-18 16:10                 ` Justin Gombos
2006-03-19 11:00                   ` Simon Wright
2006-03-20 23:57                   ` Randy Brukardt
2006-03-22  2:06                     ` Justin Gombos
2006-03-22  5:23                       ` tmoran
2006-03-22  8:48                         ` Dmitry A. Kazakov
2006-03-22  9:24                           ` Maciej Sobczak
2006-03-22 11:05                             ` Dmitry A. Kazakov
2006-03-22 16:42                               ` Maciej Sobczak
2006-03-22 18:06                                 ` Stefan Lucks
2006-03-23 13:20                                 ` Dmitry A. Kazakov
2006-03-18  8:57               ` Jacob Sparre Andersen
2006-03-19 19:07                 ` Dr. Adrian Wrigley
2006-03-20 15:25                   ` Robert A Duff
2006-03-19 22:06               ` Brian May
2006-03-20 21:17                 ` Jeffrey R. Carter
2006-03-20 23:44               ` Randy Brukardt
2006-03-22  1:27                 ` Justin Gombos
2006-03-18  9:20           ` private types Dmitry A. Kazakov
2006-03-17 13:18       ` Robert A Duff
2006-03-17 23:44         ` Justin Gombos [this message]
2006-03-18  9:24           ` Dmitry A. Kazakov
2006-03-18 12:56           ` Robert A Duff
2006-03-18 15:06             ` Justin Gombos
2006-03-19  9:35               ` Martin Krischik
2006-03-19 14:52                 ` Peter C. Chapin
2006-03-19 15:08                   ` Björn Persson
2006-03-19 16:34                     ` Martin Krischik
2006-03-20  9:57                       ` Maciej Sobczak
2006-03-20 10:58                         ` Peter C. Chapin
2006-03-20 11:19                           ` Peter C. Chapin
2006-03-20 13:06                           ` Maciej Sobczak
2006-03-20 15:19                         ` Robert A Duff
2006-03-20 16:47                           ` James Dennett
2006-03-20 19:12                         ` Martin Krischik
2006-03-21  7:27                           ` Maciej Sobczak
2006-03-20 19:32                         ` Martin Krischik
2006-03-21  7:41                           ` Maciej Sobczak
2006-03-20 20:29                       ` Simon Wright
2006-03-19 17:43                     ` Larry Kilgallen
2006-03-19 22:11                     ` Peter C. Chapin
2006-03-19 18:15                 ` Robert A Duff
2006-03-19 19:20                   ` Martin Krischik
2006-03-19 20:43                     ` Dr. Adrian Wrigley
2006-03-20 15:01                       ` Robert A Duff
2006-03-27  4:07                       ` Dave Thompson
2006-03-20  9:40                     ` Maciej Sobczak
2006-03-20 15:09                       ` Robert A Duff
2006-03-21  8:07                         ` Maciej Sobczak
2006-03-26 18:53                           ` Robert A Duff
2006-03-19 19:27                 ` Jeffrey R. Carter
2006-03-25 21:40               ` Robert A Duff
2006-03-26  0:10                 ` Justin Gombos
2006-03-26  1:00                   ` Robert A Duff
2006-03-26  6:37                     ` Jeffrey R. Carter
2006-03-26 15:43                       ` Justin Gombos
2006-03-26 16:32                         ` Robert A Duff
2006-03-26 16:51                       ` Robert A Duff
2006-03-26 19:41                         ` Jeffrey R. Carter
2006-03-26  3:15                 ` Frank J. Lhota
2006-03-26 18:28                   ` Robert A Duff
2006-03-26 19:43                     ` Jeffrey R. Carter
2006-03-26 19:59                     ` Simon Wright
     [not found] <bctruong.1.00117123@draper.com>
1999-07-28  0:00 ` Stanley R. Allen
1999-07-28  0:00   ` Thomas Hood
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