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Re: How to waste computer memory?

From Marko Rauhamaa <marko@pacujo.net>
Newsgroups comp.lang.python
Subject Re: How to waste computer memory?
Date 2016-03-19 13:07 +0200
Organization A noiseless patient Spider
Message-ID <87vb4ilo8g.fsf@elektro.pacujo.net> (permalink)
References (7 earlier) <87k2kzo5y5.fsf@elektro.pacujo.net> <mailman.353.1458335305.12893.python-list@python.org> <56ed0a71$0$1607$c3e8da3$5496439d@news.astraweb.com> <87lh5en79a.fsf@elektro.pacujo.net> <mailman.385.1458382742.12893.python-list@python.org>

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Chris Angelico <rosuav@gmail.com>:

> On Sat, Mar 19, 2016 at 8:31 PM, Marko Rauhamaa <marko@pacujo.net> wrote:
>> Unicode made several (understandable but grave) mistakes along the way:
>>
>>    * normalization
>
> Elaborate please? What's such a big mistake here?

Unicode shouldn't have allowed multiple equivalent variants for a
string.

Now Python falls victim to:

   >>> '\u006e\u0303' == '\u00f1'
   False

<URL: https://en.wikipedia.org/wiki/Unicode_equivalence>:

   For example, the code point U+006E (the Latin lowercase "n") followed
   by U+0303 (the combining tilde "◌̃") is defined by Unicode to be
   canonically equivalent to the single code point U+00F1 (the lowercase
   letter "ñ" of the Spanish alphabet). Therefore, those sequences
   should be displayed in the same manner, should be treated in the same
   way by applications such as alphabetizing names or searching, and may
   be substituted for each other.


Marko

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Thread

How to waste computer memory? wxjmfauth@gmail.com - 2016-03-17 07:34 -0700
  Re: How to waste computer memory? Rick Johnson <rantingrickjohnson@gmail.com> - 2016-03-17 12:21 -0700
    Re: How to waste computer memory? cl@isbd.net - 2016-03-17 20:31 +0000
      Re: How to waste computer memory? Chris Angelico <rosuav@gmail.com> - 2016-03-18 07:42 +1100
        Re: How to waste computer memory? Grant Edwards <invalid@invalid.invalid> - 2016-03-17 21:08 +0000
          Re: How to waste computer memory? Chris Angelico <rosuav@gmail.com> - 2016-03-18 08:13 +1100
            Re: How to waste computer memory? Paul Rubin <no.email@nospam.invalid> - 2016-03-17 14:30 -0700
          Re: How to waste computer memory? Mark Lawrence <breamoreboy@yahoo.co.uk> - 2016-03-17 22:32 +0000
          Re: How to waste computer memory? cl@isbd.net - 2016-03-17 22:42 +0000
        Re: How to waste computer memory? Marko Rauhamaa <marko@pacujo.net> - 2016-03-17 23:11 +0200
          Re: How to waste computer memory? Chris Angelico <rosuav@gmail.com> - 2016-03-18 08:17 +1100
          Re: How to waste computer memory? BartC <bc@freeuk.com> - 2016-03-17 21:26 +0000
            Re: How to waste computer memory? Mark Lawrence <breamoreboy@yahoo.co.uk> - 2016-03-17 22:38 +0000
            Re: How to waste computer memory? Chris Angelico <rosuav@gmail.com> - 2016-03-18 10:02 +1100
        Re: How to waste computer memory? alister <alister.ware@ntlworld.com> - 2016-03-17 21:37 +0000
          Re: How to waste computer memory? alister <alister.ware@ntlworld.com> - 2016-03-17 21:43 +0000
          Re: How to waste computer memory? Gene Heskett <gheskett@wdtv.com> - 2016-03-17 20:51 -0400
            Re: How to waste computer memory? Rick Johnson <rantingrickjohnson@gmail.com> - 2016-03-17 18:47 -0700
            Re: How to waste computer memory? cl@isbd.net - 2016-03-18 10:44 +0000
              Re: How to waste computer memory? Gene Heskett <gheskett@wdtv.com> - 2016-03-18 10:11 -0400
              Re: How to waste computer memory? Grant Edwards <invalid@invalid.invalid> - 2016-03-19 13:50 +0000
    Re: How to waste computer memory? Ian Kelly <ian.g.kelly@gmail.com> - 2016-03-18 01:00 -0600
      Re: How to waste computer memory? Jussi Piitulainen <jussi.piitulainen@helsinki.fi> - 2016-03-18 10:26 +0200
        Re: How to waste computer memory? Marko Rauhamaa <marko@pacujo.net> - 2016-03-18 17:26 +0200
          Re: How to waste computer memory? Steven D'Aprano <steve@pearwood.info> - 2016-03-19 03:58 +1100
          Re: How to waste computer memory? Marko Rauhamaa <marko@pacujo.net> - 2016-03-18 23:02 +0200
            Re: How to waste computer memory? Marko Rauhamaa <marko@pacujo.net> - 2016-03-18 23:28 +0200
              Re: How to waste computer memory? Marko Rauhamaa <marko@pacujo.net> - 2016-03-19 00:03 +0200
                Re: How to waste computer memory? Marko Rauhamaa <marko@pacujo.net> - 2016-03-19 09:49 +0200
                Re: How to waste computer memory? Marko Rauhamaa <marko@pacujo.net> - 2016-03-19 10:22 +0200
                Re: How to waste computer memory? Marko Rauhamaa <marko@pacujo.net> - 2016-03-19 11:40 +0200
                Re: How to waste computer memory? Steven D'Aprano <steve@pearwood.info> - 2016-03-19 19:38 +1100
            Re: How to waste computer memory? wxjmfauth@gmail.com - 2016-03-19 00:14 -0700
              Re: How to waste computer memory? wxjmfauth@gmail.com - 2016-03-19 02:17 -0700
            Re: How to waste computer memory? Steven D'Aprano <steve@pearwood.info> - 2016-03-19 19:14 +1100
              Re: How to waste computer memory? Marko Rauhamaa <marko@pacujo.net> - 2016-03-19 11:31 +0200
                Re: How to waste computer memory? wxjmfauth@gmail.com - 2016-03-19 03:40 -0700
                Re: How to waste computer memory? Marko Rauhamaa <marko@pacujo.net> - 2016-03-19 13:07 +0200
                Re: How to waste computer memory? BartC <bc@freeuk.com> - 2016-03-19 12:24 +0000
                Re: How to waste computer memory? Marko Rauhamaa <marko@pacujo.net> - 2016-03-19 14:43 +0200
                Re: How to waste computer memory? Steven D'Aprano <steve@pearwood.info> - 2016-03-20 01:18 +1100
                Re: How to waste computer memory? BartC <bc@freeuk.com> - 2016-03-19 15:14 +0000
                Re: How to waste computer memory? BartC <bc@freeuk.com> - 2016-03-19 15:20 +0000
                Re: How to waste computer memory? Steven D'Aprano <steve@pearwood.info> - 2016-03-19 22:32 +1100
                Re: How to waste computer memory? Marko Rauhamaa <marko@pacujo.net> - 2016-03-19 14:42 +0200
                Re: How to waste computer memory? Steven D'Aprano <steve@pearwood.info> - 2016-03-20 01:39 +1100
                Re: How to waste computer memory? Marko Rauhamaa <marko@pacujo.net> - 2016-03-19 16:56 +0200
                Re: How to waste computer memory? wxjmfauth@gmail.com - 2016-03-19 07:01 -0700
                Re: How to waste computer memory? Steven D'Aprano <steve@pearwood.info> - 2016-03-20 01:56 +1100
                Re: How to waste computer memory? Marko Rauhamaa <marko@pacujo.net> - 2016-03-19 17:02 +0200
                Re: How to waste computer memory? Steven D'Aprano <steve@pearwood.info> - 2016-03-20 02:47 +1100
                Re: How to waste computer memory? Marko Rauhamaa <marko@pacujo.net> - 2016-03-19 18:12 +0200
                Re: How to waste computer memory? Steven D'Aprano <steve@pearwood.info> - 2016-03-20 16:01 +1100
                Re: How to waste computer memory? Rustom Mody <rustompmody@gmail.com> - 2016-03-19 23:20 -0700
                Re: How to waste computer memory? Steven D'Aprano <steve@pearwood.info> - 2016-03-20 22:06 +1100
                Re: How to waste computer memory? Chris Angelico <rosuav@gmail.com> - 2016-03-20 22:22 +1100
                Re: How to waste computer memory? Steven D'Aprano <steve@pearwood.info> - 2016-03-20 23:14 +1100
                Re: How to waste computer memory? Chris Angelico <rosuav@gmail.com> - 2016-03-20 23:27 +1100
                Re: How to waste computer memory? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-03-20 14:55 +0000
                Re: How to waste computer memory? Marko Rauhamaa <marko@pacujo.net> - 2016-03-20 17:36 +0200
                Re: How to waste computer memory? Random832 <random832@fastmail.com> - 2016-03-20 14:17 -0400
                Re: How to waste computer memory? Marko Rauhamaa <marko@pacujo.net> - 2016-03-20 09:30 +0200
      Re: How to waste computer memory? wxjmfauth@gmail.com - 2016-03-18 03:50 -0700
      Re: How to waste computer memory? Steven D'Aprano <steve@pearwood.info> - 2016-03-18 22:46 +1100
        Re: How to waste computer memory? Steven D'Aprano <steve@pearwood.info> - 2016-03-18 22:58 +1100
          Re: How to waste computer memory? wxjmfauth@gmail.com - 2016-03-18 12:53 -0700
        Re: How to waste computer memory? Chris Angelico <rosuav@gmail.com> - 2016-03-18 23:37 +1100
        Re: How to waste computer memory? Ian Kelly <ian.g.kelly@gmail.com> - 2016-03-18 07:57 -0600
    Re: How to waste computer memory? Steven D'Aprano <steve@pearwood.info> - 2016-03-19 03:44 +1100
      Re: How to waste computer memory? Jussi Piitulainen <jussi.piitulainen@helsinki.fi> - 2016-03-18 20:22 +0200
        Re: How to waste computer memory? wxjmfauth@gmail.com - 2016-03-18 13:03 -0700
  Re: How to waste computer memory? sohcahtoa82@gmail.com - 2016-03-18 11:18 -0700

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