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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Newsgroups: comp.lang.ada
Subject: Re: Is this expected behavior or not
Date: Fri, 12 Apr 2013 09:47:04 +0200
Organization: cbb software GmbH
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Xref: news.eternal-september.org comp.lang.ada:14964
Date: 2013-04-12T09:47:04+02:00
List-Id: <comp.lang.ada>

On Thu, 11 Apr 2013 17:37:31 -0500, Randy Brukardt wrote:

> "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> wrote in message 
> news:1q6gm7foi87kr.i2q54bm8sy83.dlg@40tude.net...
> ...
>> In that case there is simply no alternative to multi-methods because n-ary
>> operations do not have preferable argument. So what are you going to do
>> with this? You ditch operations, literals, slices. A great theory!
> 
> Yup, operations that you don't need, and that are dangerous on top of that. 
> You continually claim that you need multi-methods without a shred of proof.

The list of operations required for strings was listed many times:

   function "&" (L, R : Root_String_Type) return Root_String_Type;
   function "=" (L, R : Root_String_Type) return Boolean;
   function "/=" (L, R : Root_String_Type) return Boolean;
   function ">=" (L, R : Root_String_Type) return Boolean;
   function "<=" (L, R : Root_String_Type) return Boolean;
   function ">" (L, R : Root_String_Type) return Boolean;
   function "<" (L, R : Root_String_Type) return Boolean;
   function Overwrite (Source   : in Root_String_Type);
                       Position : in Positive;
                       New_Item : in Root_String_Type)
      return Root_String_Type);

should I continue? It is hundreds of operations, literally. Take into
account a huge set of multi-dispatch operation with containers of strings,
e.g. Character_Set and Character_Mapping. It is thousands of operations you
want to overload? Drop altogether?

> Changing/comparing different representations is something that a program 
> should do very rarely, if at all.

Give "a shred of proof" that Wide_Wide_String must have same representation
as String.

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