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From: Martin Krischik <krischik@users.sourceforge.net>
Newsgroups: comp.lang.ada
Subject: Re: ADA Popularity Discussion Request
Date: Wed, 15 Sep 2004 12:14:31 +0200
Organization: AdaCL
Message-ID: <1782038.ine8gsgUCE@linux1.krischik.com>
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Date: 2004-09-15T12:14:31+02:00
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Dmitry A. Kazakov wrote:

> Should it be generic, parametrized by a
> string type. Which is BTW impossible too, because even at the level of
> generics the least common ancestor of all Ada string types is "type Duno
> is private";

I think you have not worked enough with generics.

generic

   type Character_Type is (<>);

   type String_Type is array (Positive range <>) of Character_Type;

package Some_Generic_String_Operations


But there is a problem of course: Unbounded_String is not a generic
instantiation. It really should have been:

package Unbounded_String
is new Generic_Unbounded_String (
   Character_Type => Character,
   String_Type => String);

package Wide_Unbounded_String
is new Generic_Unbounded_String (
   Character_Type => Wide_Character,
   String_Type => Wide_String);

And sadly it is to late for that.

With Regards

Martin

-- 
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