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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Newsgroups: comp.lang.ada
Subject: Re: Practicalities of Ada for app development
Date: Mon, 11 Jun 2012 20:38:52 +0200
Organization: cbb software GmbH
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Date: 2012-06-11T20:38:52+02:00
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On Mon, 11 Jun 2012 18:19:34 +0200, Jacob Sparre Andersen wrote:

> Dmitry A. Kazakov wrote:
> 
>> Code points are numeric:
>>
>> http://en.wikipedia.org/wiki/Unicode
>>
>> As I wrote, I considered Wide_Wide_Character, which also partially
>> implements the interface of code point. I used modular interface
>> instead because numeric literals seem more important for code points
>> than character literals.
> 
> Did you remember to override the operators on your code point type with
> abstract functions?
> 
>    type Code_Point is mod 2 ** 32;
>    overriding
>    function "+" (Left, Right : Code_Point) return Code_Point is abstract;
>    ...

I know the trick. I didn't do that because +1 is useful for sets and maps.
Code_Point'Succ is annoying.

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de