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From: "J-P. Rosen" <rosen@adalog.fr>
Newsgroups: comp.lang.ada
Subject: Re: Strange crash on custom iterator
Date: Wed, 4 Jul 2018 16:57:59 +0200
Organization: Adalog
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Xref: reader02.eternal-september.org comp.lang.ada:53593
Date: 2018-07-04T16:57:59+02:00
List-Id: <comp.lang.ada>

Le 04/07/2018 à 16:37, Dan'l Miller a écrit :
> The difficulty is that •no one• has the single •solution• for this
> problem or these concomitant problems.  Not even J-P. Rosen is a
> possessor of complete solution in his Wide_Wide_String
> recommendation, because his replies seem to factually-incorrectly
> imply that there exists a fully-normalized single-codepoint character
> in Unicode/ISO10646 for each grapheme/letter.

You are right that characters not in normalized form (not only
lithuanians!) may have a representation as several code points, which
implies O(N) for some operations... But if it is encoded in UTF-8, you
need an extra O(N) operation to first decode the code point. The
difference between the two is still there.
-- 
J-P. Rosen
Adalog
2 rue du Docteur Lombard, 92441 Issy-les-Moulineaux CEDEX
Tel: +33 1 45 29 21 52, Fax: +33 1 45 29 25 00
http://www.adalog.fr