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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Newsgroups: comp.lang.ada
Subject: Re: Why no Ada.Wide_Directories?
Date: Fri, 21 Oct 2011 20:34:55 +0200
Organization: cbb software GmbH
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Date: 2011-10-21T20:34:55+02:00
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On Fri, 21 Oct 2011 18:03:03 +0200, Yannick Duch�ne (Hibou57) wrote:

> Le Fri, 21 Oct 2011 15:13:54 +0200, Dmitry A. Kazakov  
> <mailbox@dmitry-kazakov.de> a �crit:

>> Not really. Wide_Wide_String is one possible implementation of logical
>> Unicode string.
> And precisely, that implementation is sufficient (*).

Nope. Under Windows I rather need UTF-16 and ASCII. Under Linux it would be
UTF-8 and RADIX-50 for RSX-11.

> You can't expect Ada  
> will provide a so much abstract implementation that it will cover all  
> possible implementations.

Why not? Why should not a language provide abstractions for  character
encoding?

> (*) And that implementation is a clean view, unlike the one of String  
> holding UTF-8 data.

You are confusing interface and implementation. This is one of Ada's
problems that they are not clearly separated. Ada 83 pioneered the idea of
such separation for user-defined private types, but was not consequent to
support it for other types, especially, for arrays and records.

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