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Groups > comp.lang.python > #51137

Re: RE Module Performance

Date 2013-07-24 08:47 -0600
From Michael Torrie <torriem@gmail.com>
Subject Re: RE Module Performance
References (1 earlier) <571a6dfe-fd66-42cf-92fc-8b97cbe6e9e4@googlegroups.com> <51DFDE65.5040001@Gmail.com> <CAN1F8qUFP3uX57HhiiUPaYqO3h_HiT8Q_YD=vCYky3EAWsdE7Q@mail.gmail.com> <mailman.4666.1373670835.3114.python-list@python.org> <4f1067f6-bc99-42ad-9166-37fb228b90e8@googlegroups.com>
Newsgroups comp.lang.python
Message-ID <mailman.5039.1374677274.3114.python-list@python.org> (permalink)

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On 07/24/2013 07:40 AM, wxjmfauth@gmail.com wrote:
> Sorry, you are not understanding Unicode. What is a Unicode
> Transformation Format (UTF), what is the goal of a UTF and
> why it is important for an implementation to work with a UTF.

Really?  Enlighten me.

Personally, I would never use UTF as a representation *in memory* for a
unicode string if it were up to me.  Why?  Because UTF characters are
not uniform in byte width so accessing positions within the string is
terribly slow and has to always be done by starting at the beginning of
the string.  That's at minimum O(n) compared to FSR's O(1).  Surely you
understand this.  Do you dispute this fact?

UTF is a great choice for interchange, though, and indeed that's what it
was designed for.

Are you calling for UTF to be adopted as the internal, in-memory
representation of unicode?  Or would you simply settle for UCS-4?
Please be clear here.  What are you saying?

> Short example. Writing an editor with something like the
> FSR is simply impossible (properly).

How? FSR is just an implementation detail.  It could be UCS-4 and it
would also work.

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Thread

RE Module Performance Devyn Collier Johnson <devyncjohnson@gmail.com> - 2013-07-11 19:44 -0400
  Re: RE Module Performance wxjmfauth@gmail.com - 2013-07-12 02:23 -0700
    Re: RE Module Performance Chris Angelico <rosuav@gmail.com> - 2013-07-12 19:27 +1000
    Re: RE Module Performance Joshua Landau <joshua@landau.ws> - 2013-07-12 10:39 +0100
    Re: RE Module Performance Chris Angelico <rosuav@gmail.com> - 2013-07-12 19:40 +1000
    Re: RE Module Performance Devyn Collier Johnson <devyncjohnson@gmail.com> - 2013-07-12 06:45 -0400
    Re: RE Module Performance Joshua Landau <joshua@landau.ws> - 2013-07-12 16:59 +0100
    Re: RE Module Performance Peter Otten <__peter__@web.de> - 2013-07-12 18:15 +0200
    Re: RE Module Performance Chris Angelico <rosuav@gmail.com> - 2013-07-13 02:21 +1000
    Re: RE Module Performance Devyn Collier Johnson <devyncjohnson@gmail.com> - 2013-07-12 13:58 -0400
      Re: RE Module Performance Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-07-13 05:37 +0000
        Re: RE Module Performance 88888 Dihedral <dihedral88888@gmail.com> - 2013-07-14 11:17 -0700
          Re: RE Module Performance Devyn Collier Johnson <devyncjohnson@gmail.com> - 2013-07-15 06:06 -0400
            Re: RE Module Performance Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-07-15 12:36 +0000
              Dihedral Devyn Collier Johnson <devyncjohnson@gmail.com> - 2013-07-15 08:52 -0400
              Re: Dihedral Joel Goldstick <joel.goldstick@gmail.com> - 2013-07-15 09:03 -0400
              Re: Dihedral Wayne Werner <wayne@waynewerner.com> - 2013-07-15 17:43 -0500
              Re: Dihedral Fábio Santos <fabiosantosart@gmail.com> - 2013-07-15 23:54 +0100
              Re: Dihedral Chris Angelico <rosuav@gmail.com> - 2013-07-16 08:59 +1000
              Re: Dihedral Tim Delaney <timothy.c.delaney@gmail.com> - 2013-07-16 16:06 +1000
              Re: Dihedral Stefan Behnel <stefan_ml@behnel.de> - 2013-07-24 20:08 +0200
              Re: Dihedral Chris Angelico <rosuav@gmail.com> - 2013-07-25 04:23 +1000
              Re: Dihedral Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2013-07-24 20:15 -0400
    Re: RE Module Performance Tim Delaney <timothy.c.delaney@gmail.com> - 2013-07-13 08:16 +1000
    Re: RE Module Performance Michael Torrie <torriem@gmail.com> - 2013-07-12 17:13 -0600
      Re: RE Module Performance wxjmfauth@gmail.com - 2013-07-24 06:40 -0700
        Re: RE Module Performance Chris Angelico <rosuav@gmail.com> - 2013-07-24 23:48 +1000
        Re: RE Module Performance David Hutto <dwightdhutto@gmail.com> - 2013-07-24 10:17 -0400
        Re: RE Module Performance David Hutto <dwightdhutto@gmail.com> - 2013-07-24 10:19 -0400
        Re: RE Module Performance Chris Angelico <rosuav@gmail.com> - 2013-07-25 00:34 +1000
          Re: RE Module Performance Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-07-25 07:02 +0000
            Re: RE Module Performance Chris Angelico <rosuav@gmail.com> - 2013-07-25 17:39 +1000
        Re: RE Module Performance Michael Torrie <torriem@gmail.com> - 2013-07-24 08:47 -0600
          Re: RE Module Performance wxjmfauth@gmail.com - 2013-07-25 02:27 -0700
            Re: RE Module Performance Chris Angelico <rosuav@gmail.com> - 2013-07-25 20:14 +1000
              Re: RE Module Performance wxjmfauth@gmail.com - 2013-07-25 12:07 -0700
                Re: RE Module Performance Chris Angelico <rosuav@gmail.com> - 2013-07-26 05:18 +1000
                RE: RE Module Performance "Prasad, Ramit" <ramit.prasad@jpmorgan.com> - 2013-07-25 19:30 +0000
                Re: RE Module Performance Michael Torrie <torriem@gmail.com> - 2013-07-25 21:06 -0600
        Re: RE Module Performance Michael Torrie <torriem@gmail.com> - 2013-07-24 09:00 -0600
          Re: RE Module Performance Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-07-25 05:56 +0000
        Re: RE Module Performance Chris Angelico <rosuav@gmail.com> - 2013-07-25 00:56 +1000
        Re: RE Module Performance Terry Reedy <tjreedy@udel.edu> - 2013-07-24 13:52 -0400
        Re: RE Module Performance Chris Angelico <rosuav@gmail.com> - 2013-07-25 04:15 +1000
          Re: RE Module Performance Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-07-25 07:15 +0000
            Re: RE Module Performance Chris Angelico <rosuav@gmail.com> - 2013-07-25 17:58 +1000
              Re: RE Module Performance Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-07-25 09:22 +0000
                Re: RE Module Performance Chris Angelico <rosuav@gmail.com> - 2013-07-25 20:07 +1000
        Re: RE Module Performance Terry Reedy <tjreedy@udel.edu> - 2013-07-24 18:09 -0400
        Re: RE Module Performance Chris Angelico <rosuav@gmail.com> - 2013-07-25 08:19 +1000
        Re: RE Module Performance Michael Torrie <torriem@gmail.com> - 2013-07-24 16:59 -0600
        Re: RE Module Performance Chris Angelico <rosuav@gmail.com> - 2013-07-25 09:24 +1000
        Re: RE Module Performance Serhiy Storchaka <storchaka@gmail.com> - 2013-07-25 08:49 +0300
        Re: RE Module Performance Chris Angelico <rosuav@gmail.com> - 2013-07-25 15:58 +1000
        Re: RE Module Performance Jeremy Sanders <jeremy@jeremysanders.net> - 2013-07-25 14:36 +0100
          Re: RE Module Performance Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-07-25 15:26 +0000
            Re: RE Module Performance Chris Angelico <rosuav@gmail.com> - 2013-07-26 01:36 +1000
              Re: RE Module Performance Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-07-25 17:18 +0000
                Re: RE Module Performance Chris Angelico <rosuav@gmail.com> - 2013-07-26 03:27 +1000
                Re: RE Module Performance Ian Kelly <ian.g.kelly@gmail.com> - 2013-07-25 15:45 -0500
                Re: RE Module Performance Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-07-26 02:48 +0000
                Re: RE Module Performance Ian Kelly <ian.g.kelly@gmail.com> - 2013-07-25 21:20 -0600
                Re: RE Module Performance wxjmfauth@gmail.com - 2013-07-26 06:36 -0700
                Re: RE Module Performance wxjmfauth@gmail.com - 2013-07-26 08:46 -0700
                Re: RE Module Performance Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-07-27 06:28 +0000
                Re: RE Module Performance Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-07-27 03:37 +0000
                Re: RE Module Performance Ian Kelly <ian.g.kelly@gmail.com> - 2013-07-26 22:12 -0600
                Re: RE Module Performance Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-07-27 05:04 +0000
                Re: RE Module Performance Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2013-07-27 12:13 -0400
                Re: RE Module Performance wxjmfauth@gmail.com - 2013-07-26 06:19 -0700
                Re: RE Module Performance Michael Torrie <torriem@gmail.com> - 2013-07-25 21:09 -0600
                Re: RE Module Performance wxjmfauth@gmail.com - 2013-07-26 06:21 -0700
                Re: RE Module Performance Michael Torrie <torriem@gmail.com> - 2013-07-26 20:05 -0600
                Re: RE Module Performance wxjmfauth@gmail.com - 2013-07-27 11:21 -0700
                Re: RE Module Performance Ian Kelly <ian.g.kelly@gmail.com> - 2013-07-27 21:53 -0600
                Re: RE Module Performance wxjmfauth@gmail.com - 2013-07-28 11:13 -0700
                Re: RE Module Performance MRAB <python@mrabarnett.plus.com> - 2013-07-28 20:04 +0100
                Re: RE Module Performance wxjmfauth@gmail.com - 2013-07-28 12:30 -0700
                Re: RE Module Performance Lele Gaifax <lele@metapensiero.it> - 2013-07-28 22:45 +0200
                Re: RE Module Performance Antoon Pardon <antoon.pardon@rece.vub.ac.be> - 2013-07-28 22:01 +0200
                Re: RE Module Performance wxjmfauth@gmail.com - 2013-07-30 07:01 -0700
                Re: RE Module Performance Antoon Pardon <antoon.pardon@rece.vub.ac.be> - 2013-07-30 16:38 +0200
                Re: RE Module Performance Chris Angelico <rosuav@gmail.com> - 2013-07-30 15:45 +0100
                Re: RE Module Performance MRAB <python@mrabarnett.plus.com> - 2013-07-30 17:13 +0100
                Re: RE Module Performance Antoon Pardon <antoon.pardon@rece.vub.ac.be> - 2013-07-30 18:39 +0200
                Re: RE Module Performance MRAB <python@mrabarnett.plus.com> - 2013-07-30 18:14 +0100
                Re: RE Module Performance Neil Hodgson <nhodgson@iinet.net.au> - 2013-07-31 13:09 +1000
                Re: RE Module Performance Tim Delaney <timothy.c.delaney@gmail.com> - 2013-07-31 03:27 +1000
                Re: RE Module Performance Joshua Landau <joshua@landau.ws> - 2013-07-30 18:40 +0100
                Re: RE Module Performance Antoon Pardon <antoon.pardon@rece.vub.ac.be> - 2013-07-30 20:19 +0200
                Re: RE Module Performance wxjmfauth@gmail.com - 2013-07-30 12:09 -0700
                Re: RE Module Performance Chris Angelico <rosuav@gmail.com> - 2013-07-30 21:04 +0100
                Re: RE Module Performance Michael Torrie <torriem@gmail.com> - 2013-07-30 21:54 -0600
                Re: RE Module Performance Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-07-31 05:45 +0000
                Re: RE Module Performance Chris Angelico <rosuav@gmail.com> - 2013-07-31 08:17 +0100
                Re: RE Module Performance wxjmfauth@gmail.com - 2013-07-31 13:15 -0700
                Re: RE Module Performance Chris Angelico <rosuav@gmail.com> - 2013-07-31 21:41 +0100
                Re: RE Module Performance Antoon Pardon <antoon.pardon@rece.vub.ac.be> - 2013-07-31 10:11 +0200
                Re: RE Module Performance wxjmfauth@gmail.com - 2013-07-31 01:32 -0700
                Re: RE Module Performance Antoon Pardon <antoon.pardon@rece.vub.ac.be> - 2013-07-31 10:59 +0200
                Re: RE Module Performance Michael Torrie <torriem@gmail.com> - 2013-07-31 08:44 -0600
                Re: RE Module Performance Terry Reedy <tjreedy@udel.edu> - 2013-07-30 17:05 -0400
                Re: RE Module Performance Michael Torrie <torriem@gmail.com> - 2013-07-30 21:30 -0600
                Re: RE Module Performance Antoon Pardon <antoon.pardon@rece.vub.ac.be> - 2013-07-31 09:23 +0200
                Re: RE Module Performance Michael Torrie <torriem@gmail.com> - 2013-07-31 08:27 -0600
                Re: RE Module Performance Antoon Pardon <antoon.pardon@rece.vub.ac.be> - 2013-07-28 10:45 +0200
                FSR and unicode compliance - was Re: RE Module Performance Michael Torrie <torriem@gmail.com> - 2013-07-28 09:52 -0600
                Re: FSR and unicode compliance - was Re: RE Module Performance wxjmfauth@gmail.com - 2013-07-28 12:23 -0700
                Re: FSR and unicode compliance - was Re: RE Module Performance MRAB <python@mrabarnett.plus.com> - 2013-07-28 20:44 +0100
                Re: FSR and unicode compliance - was Re: RE Module Performance Antoon Pardon <antoon.pardon@rece.vub.ac.be> - 2013-07-28 21:55 +0200
                Re: FSR and unicode compliance - was Re: RE Module Performance Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-07-28 20:52 +0000
                Re: FSR and unicode compliance - was Re: RE Module Performance wxjmfauth@gmail.com - 2013-07-29 04:43 -0700
                Re: FSR and unicode compliance - was Re: RE Module Performance Chris Angelico <rosuav@gmail.com> - 2013-07-29 12:57 +0100
                Re: FSR and unicode compliance - was Re: RE Module Performance wxjmfauth@gmail.com - 2013-07-29 05:56 -0700
                Re: FSR and unicode compliance - was Re: RE Module Performance wxjmfauth@gmail.com - 2013-07-29 07:20 -0700
                Re: FSR and unicode compliance - was Re: RE Module Performance Chris Angelico <rosuav@gmail.com> - 2013-07-29 15:49 +0100
                Re: FSR and unicode compliance - was Re: RE Module Performance wxjmfauth@gmail.com - 2013-07-29 09:31 -0700
                Re: FSR and unicode compliance - was Re: RE Module Performance Heiko Wundram <modelnine@modelnine.org> - 2013-07-29 14:06 +0200
                Re: FSR and unicode compliance - was Re: RE Module Performance Devyn Collier Johnson <devyncjohnson@gmail.com> - 2013-07-29 08:43 -0400
                Re: FSR and unicode compliance - was Re: RE Module Performance Chris Angelico <rosuav@gmail.com> - 2013-07-28 18:03 +0100
                Re: FSR and unicode compliance - was Re: RE Module Performance Terry Reedy <tjreedy@udel.edu> - 2013-07-28 13:36 -0400
                Re: FSR and unicode compliance - was Re: RE Module Performance wxjmfauth@gmail.com - 2013-07-29 06:36 -0700
                Re: FSR and unicode compliance - was Re: RE Module Performance Chris Angelico <rosuav@gmail.com> - 2013-07-28 19:03 +0100
                Re: RE Module Performance Joshua Landau <joshua@landau.ws> - 2013-07-28 19:19 +0100
                Re: RE Module Performance Chris Angelico <rosuav@gmail.com> - 2013-07-28 19:29 +0100
                Re: RE Module Performance Terry Reedy <tjreedy@udel.edu> - 2013-07-28 15:06 -0400
                Re: RE Module Performance Joshua Landau <joshua@landau.ws> - 2013-07-28 23:14 +0100
                Re: RE Module Performance Antoon Pardon <antoon.pardon@rece.vub.ac.be> - 2013-07-28 20:51 +0200
                Re: RE Module Performance Chris Angelico <rosuav@gmail.com> - 2013-07-29 00:07 +0100
                Re: RE Module Performance Antoon Pardon <antoon.pardon@rece.vub.ac.be> - 2013-07-26 22:38 +0200
        Re: RE Module Performance Devyn Collier Johnson <devyncjohnson@gmail.com> - 2013-07-25 09:44 -0400
        Re: RE Module Performance Ian Kelly <ian.g.kelly@gmail.com> - 2013-07-25 15:53 -0500
    Re: RE Module Performance MRAB <python@mrabarnett.plus.com> - 2013-07-13 00:16 +0100
    Re: RE Module Performance Tim Delaney <timothy.c.delaney@gmail.com> - 2013-07-14 05:34 +1000
    Re: RE Module Performance Devyn Collier Johnson <devyncjohnson@gmail.com> - 2013-07-16 06:30 -0400
      Re: RE Module Performance 88888 Dihedral <dihedral88888@gmail.com> - 2013-07-18 13:17 -0700

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