Re: Why is array.array('u') deprecated?

Path	csiph.com!usenet.pasdenom.info!weretis.net!feeder4.news.weretis.net!feeds.phibee-telecom.net!newsfeed.xs4all.nl!newsfeed4.news.xs4all.nl!xs4all!post.news.xs4all.nl!not-for-mail
Return-Path	<python-python-list@m.gmane.org>
X-Original-To	python-list@python.org
Delivered-To	python-list@mail.python.org
X-Spam-Status	OK 0.001
X-Spam-Evidence	'H': 1.00; 'S': 0.00; 'matches': 0.07; 'utf-8': 0.07; '32-bit': 0.09; 'here?': 0.09; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'subject:Why': 0.09; 'question.': 0.14; 'character).': 0.16; 'encodings': 0.16; 'mutable': 0.16; 'received:80.91.229.3': 0.16; 'received:dip0.t-ipconnect.de': 0.16; 'received:plane.gmane.org': 0.16; 'received:t-ipconnect.de': 0.16; 'unicode,': 0.16; 'wrote:': 0.18; 'bit': 0.19; 'module': 0.19; 'creating': 0.23; 'header:User-Agent:1': 0.23; 'bytes': 0.24; 'unicode': 0.24; 'pass': 0.26; 'header:X-Complaints-To:1': 0.27; 'array': 0.29; 'character': 0.29; "doesn't": 0.30; 'work.': 0.31; "d'aprano": 0.31; 'option.': 0.31; 'steven': 0.31; 'fri,': 0.33; 'guess': 0.33; 'could': 0.34; 'something': 0.35; 'subject:?': 0.36; 'searching': 0.37; 'two': 0.37; 'to:addr :python-list': 0.38; 'pm,': 0.38; 'to:addr:python.org': 0.39; 'received:org': 0.40; 'how': 0.40; 'helps': 0.61; 'new': 0.61; 'email addr:gmail.com': 0.63; 'filling': 0.78; '2015': 0.84
X-Injected-Via-Gmane	http://gmane.org/
To	python-list@python.org
From	Peter Otten <__peter__@web.de>
Subject	Re: Why is array.array('u') deprecated?
Date	Fri, 08 May 2015 13:35:30 +0200
Organization	None
References	<80167ebf-c5ee-4699-89ca-ef544fe3decc@googlegroups.com> <554c8ff2$0$12990$c3e8da3$5496439d@news.astraweb.com> <93aaa9cd-5d30-44db-9324-4fffe292e9e4@googlegroups.com>
Mime-Version	1.0
Content-Type	text/plain; charset="UTF-8"
Content-Transfer-Encoding	8Bit
X-Gmane-NNTP-Posting-Host	p57bd82d4.dip0.t-ipconnect.de
User-Agent	KNode/4.13.3
X-BeenThere	python-list@python.org
X-Mailman-Version	2.1.20+
Precedence	list
List-Id	General discussion list for the Python programming language <python-list.python.org>
List-Unsubscribe	<https://mail.python.org/mailman/options/python-list>, <mailto:python-list-request@python.org?subject=unsubscribe>
List-Archive	<http://mail.python.org/pipermail/python-list/>
List-Post	<mailto:python-list@python.org>
List-Help	<mailto:python-list-request@python.org?subject=help>
List-Subscribe	<https://mail.python.org/mailman/listinfo/python-list>, <mailto:python-list-request@python.org?subject=subscribe>
Newsgroups	comp.lang.python
Message-ID	<mailman.237.1431084939.12865.python-list@python.org> (permalink)
Lines	30
NNTP-Posting-Host	2001:888:2000:d::a6
X-Trace	1431084939 news.xs4all.nl 2825 [2001:888:2000:d::a6]:36828
X-Complaints-To	abuse@xs4all.nl
Xref	csiph.com comp.lang.python:90148

Show key headers only | View raw

jonathan.slenders@gmail.com wrote:

> Le vendredi 8 mai 2015 12:29:15 UTC+2, Steven D'Aprano a écrit :
>> On Fri, 8 May 2015 07:14 pm, jonathan.slenders wrote:
>> 
>> > Why is array.array('u') deprecated?
>> > 
>> > Will we get an alternative for a character array or mutable unicode
>> > string?
>> 
>> 
>> Good question.
>> 
>> Of the three main encodings for Unicode, two are variable-width:
>> 
>> * UTF-8 uses 1-4 bytes per character
>> * UTF-16 uses 2 or 4 bytes per character
>> 
>> while UTF-32 is fixed-width (4 bytes per character). So you could try
>> faking it with a 32-bit array and filling it with
>> string.encode('utf-32').
> 
> 
> I guess that doesn't work. I need to have something that I can pass to the
> re module for searching through it. Creating new strings all the time is
> no option. (Think about gigabyte strings.)

Can you expand a bit on how array("u") helps here? Are the matches in the 
gigabyte range?

Thread

Why is array.array('u') deprecated? jonathan.slenders@gmail.com - 2015-05-08 02:14 -0700
  Re: Why is array.array('u') deprecated? wxjmfauth@gmail.com - 2015-05-08 02:37 -0700
  Re: Why is array.array('u') deprecated? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-05-08 20:29 +1000
    Re: Why is array.array('u') deprecated? jonathan.slenders@gmail.com - 2015-05-08 04:05 -0700
      Re: Why is array.array('u') deprecated? Peter Otten <__peter__@web.de> - 2015-05-08 13:35 +0200
        Re: Why is array.array('u') deprecated? jonathan.slenders@gmail.com - 2015-05-08 05:12 -0700
          Re: Why is array.array('u') deprecated? Peter Otten <__peter__@web.de> - 2015-05-08 15:11 +0200
            Re: Why is array.array('u') deprecated? jonathan.slenders@gmail.com - 2015-05-08 07:40 -0700
              Re: Why is array.array('u') deprecated? Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-05-11 08:03 +0100

csiph-web