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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Subject: Re: String filtering
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Date: Wed, 28 Sep 2005 14:02:53 +0200
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On Wed, 28 Sep 2005 10:51:35 +1000, David Trudgett wrote:

> "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> writes:
> 
>> It is a different story. Unbounded_String is a nasty kludge. But
>> that does not mean that if they were designed properly, they would
>> be more needed!  (:-))
> 
> I'm almost afraid to ask... :-) What is it about Unbounded_String that
> makes it a kludge, in your opinion? Is there something unecessarily
> inefficient (space/time) about the way they are specified in the Ada95
> standard? Or is it that existing implementations of it are a kludge?

It is much simpler, they are *not* strings: ARM 95 3.6.3 (1):

"A one-dimensional array type whose component type is a character type is
called a string type."

Unbounded_String design was a compromise, to make them right would have
required too many changes in the language. And there already were many.

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