From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Subject: Re: Practicalities of Ada for app development
Date: Mon, 11 Jun 2012 10:22:35 +0200
Date: 2012-06-11T10:22:35+02:00 [thread overview]
Message-ID: <wrszvbmpsf1z$.847h0c2hsxl0.dlg@40tude.net> (raw)
In-Reply-To: 42a87cf3ce9bfd6054f78b2b5b356301@dizum.com
On Sun, 10 Jun 2012 23:36:46 +0200 (CEST), Nomen Nescio wrote:
> "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> wrote:
>>
>>> Please, why have you defined Code_Point as a modular type?
>>
>> Because code point is unsigned. When you declare something signed
>> you do that because you want negative inverses. Signed integers have
>> the base type with 0 in the middle of its range.
>
> That's no reason to use mod. You can put boundaries where you want
> them, integer, or mod.
>
> It's about the operators.
Exactly, there is *no* arithmetic of code points. Code point is an
enumeration. The modulo ring operations with code points are less
meaningless than bounded integer arithmetic is. You better don't add code
points at all. Implementation per modular type has performance advantages,
so I chose it. I considered Wide_Wide_Character instead, but dropped that
idea because it would lack numeric literals common for Unicode.
--
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de
next prev parent reply other threads:[~2012-06-14 17:18 UTC|newest]
Thread overview: 112+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-08 20:48 Practicalities of Ada for app development wrp
2012-06-08 21:35 ` Jeffrey Carter
2012-06-09 0:40 ` Adam Beneschan
2012-06-09 6:38 ` Jeffrey Carter
2012-06-21 17:14 ` Randy Brukardt
2012-06-21 18:16 ` Adam Beneschan
2012-06-21 19:18 ` J-P. Rosen
2012-06-21 20:30 ` Adam Beneschan
2012-06-21 21:09 ` Randy Brukardt
2012-06-22 4:59 ` Simon Wright
2012-06-22 5:32 ` Tero Koskinen
2012-06-22 19:51 ` Randy Brukardt
2012-06-21 21:15 ` J-P. Rosen
2012-06-22 10:43 ` Tero Koskinen
2012-06-21 21:00 ` Randy Brukardt
2012-06-21 21:18 ` J-P. Rosen
2012-06-22 19:55 ` Randy Brukardt
2012-06-23 6:43 ` J-P. Rosen
2012-06-09 4:30 ` BrianG
2012-06-09 7:11 ` Georg Bauhaus
2012-06-13 10:20 ` quiet_lad
2012-06-09 6:55 ` gautier_niouzes
2012-06-09 7:04 ` Georg Bauhaus
2012-06-09 9:25 ` Nomen Nescio
2012-06-09 9:36 ` Dmitry A. Kazakov
2012-06-10 3:46 ` Yannick Duchêne (Hibou57)
2012-06-12 20:10 ` i3text
2012-06-13 7:55 ` Dmitry A. Kazakov
2012-06-21 17:21 ` Randy Brukardt
2012-06-13 10:28 ` quiet_lad
2012-06-13 13:07 ` Dmitry A. Kazakov
2012-06-09 16:09 ` tmoran
2012-06-13 10:29 ` quiet_lad
2012-06-09 23:18 ` darkestkhan
2012-06-10 3:56 ` Yannick Duchêne (Hibou57)
2012-06-10 14:04 ` Dmitry A. Kazakov
2012-06-10 16:51 ` Yannick Duchêne (Hibou57)
2012-06-10 17:00 ` Dmitry A. Kazakov
2012-06-10 17:18 ` Yannick Duchêne (Hibou57)
2012-06-10 19:33 ` Dmitry A. Kazakov
2012-06-10 21:36 ` Nomen Nescio
2012-06-11 8:22 ` Dmitry A. Kazakov [this message]
2012-06-11 14:27 ` Georg Bauhaus
2012-06-11 14:43 ` Dmitry A. Kazakov
2012-06-11 16:19 ` Jacob Sparre Andersen
2012-06-11 18:38 ` Dmitry A. Kazakov
2012-06-11 17:14 ` Georg Bauhaus
2012-06-11 18:38 ` Dmitry A. Kazakov
2012-06-11 20:50 ` Georg Bauhaus
2012-06-11 21:43 ` Yannick Duchêne (Hibou57)
2012-06-12 7:55 ` Dmitry A. Kazakov
2012-06-12 9:48 ` Georg Bauhaus
2012-06-12 11:44 ` Dmitry A. Kazakov
2012-06-12 12:17 ` Georg Bauhaus
2012-06-12 12:18 ` Dmitry A. Kazakov
2012-06-11 18:29 ` Adam Beneschan
2012-06-11 19:16 ` Jeffrey Carter
2012-06-11 21:47 ` Yannick Duchêne (Hibou57)
2012-06-21 17:39 ` Randy Brukardt
2012-06-21 17:34 ` Randy Brukardt
2012-06-10 18:15 ` darkestkhan
2012-06-10 19:25 ` Dmitry A. Kazakov
2012-06-11 6:34 ` Jacob Sparre Andersen
2012-06-21 17:41 ` Randy Brukardt
2012-06-10 15:49 ` Shark8
2012-06-10 17:04 ` Yannick Duchêne (Hibou57)
2012-06-10 19:47 ` Dmitry A. Kazakov
2012-06-11 0:37 ` Nasser M. Abbasi
2012-06-11 8:37 ` Dmitry A. Kazakov
2012-06-12 6:24 ` Yannick Duchêne (Hibou57)
2012-06-12 7:59 ` Dmitry A. Kazakov
2012-06-13 10:35 ` quiet_lad
2012-06-13 13:09 ` Dmitry A. Kazakov
2012-06-14 3:21 ` quiet_lad
2012-06-14 7:58 ` Dmitry A. Kazakov
2012-06-14 8:39 ` Yannick Duchêne (Hibou57)
2012-06-14 9:26 ` Dmitry A. Kazakov
2012-06-21 17:51 ` Randy Brukardt
2012-06-11 0:00 ` Nasser M. Abbasi
2012-06-11 3:23 ` Jeffrey Carter
2012-06-11 21:10 ` Nomen Nescio
2012-06-11 21:55 ` Adam Beneschan
2012-06-12 8:07 ` Nomen Nescio
2012-06-12 15:28 ` Fritz Wuehler
2012-06-12 21:34 ` Nomen Nescio
2012-06-14 11:12 ` Nomen Nescio
2012-06-21 18:01 ` Randy Brukardt
2012-06-12 21:12 ` Nomen Nescio
2012-06-13 0:04 ` Adam Beneschan
2012-06-13 3:04 ` Shark8
2012-06-13 8:21 ` Dmitry A. Kazakov
2012-06-13 18:21 ` Shark8
2012-06-13 19:11 ` Dmitry A. Kazakov
2012-06-13 22:01 ` Yannick Duchêne (Hibou57)
2012-06-14 8:02 ` Dmitry A. Kazakov
2012-06-14 9:10 ` Yannick Duchêne (Hibou57)
2012-06-14 9:33 ` Dmitry A. Kazakov
2012-06-21 18:10 ` Randy Brukardt
2012-06-13 8:35 ` Yannick Duchêne (Hibou57)
2012-06-13 8:37 ` Georg Bauhaus
2012-06-13 10:14 ` Georg Bauhaus
2012-06-11 22:49 ` Jeffrey Carter
2012-06-13 10:31 ` quiet_lad
2012-06-13 12:57 ` Maciej Sobczak
2012-06-14 4:18 ` quiet_lad
2012-06-14 7:35 ` Ludovic Brenta
2012-06-14 10:02 ` Georg Bauhaus
2012-06-12 19:17 ` i3text
2012-06-12 19:52 ` Vadim Godunko
2012-06-27 18:39 ` Eryndlia Mavourneen
2012-06-27 18:46 ` Eryndlia Mavourneen
2012-06-28 13:23 ` Simon Wright
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