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Re: Chardet, file, ... and the Flexible String Representation

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From Terry Reedy <tjreedy@udel.edu>
Subject Re: Chardet, file, ... and the Flexible String Representation
Date Mon, 09 Sep 2013 16:47:43 -0400
References <4ce85ea8-4a4c-46cf-a546-ad999576a5f7@googlegroups.com> <m2a9jqq7g9.fsf@cochabamba.vanoostrum.org> <04abbe99-ca1e-40b5-86c7-64b0e5d9de9c@googlegroups.com> <522DF982.7060106@nedbatchelder.com>
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On 9/9/2013 12:38 PM, Ned Batchelder wrote:

> jmf, thanks for your reply.  You've calmed my fears that there is
> something wrong with the Flexible String Representation.  None of the
> examples you show demonstrate any behavior contrary to the Unicode spec.

The goals of the new unicode implementation:
1. one implementation on all platforms, working the same on all platforms.
2. works correctly
3. O(1) indexing
4. save as much space as sensibly possible
5. not too much time penalty for the space saving.

The new implementation succeeded on all points. It exceeded the goal for 
5. With much optimization work, there essentially is no overall time 
penalty left.

Jmf's size examples show success with respect to goal 4. He apparently 
disagrees with that goal and would replace it with something else. At 
least some of his time examples show that saving space can save time, as 
was predicted when the FSR was being developed.

-- 
Terry Jan Reedy

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Thread

Chardet, file, ... and the Flexible String Representation wxjmfauth@gmail.com - 2013-09-06 02:11 -0700
  Re: Chardet, file, ... and the Flexible String Representation Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-09-06 10:57 +0000
  Re: Chardet, file, ... and the Flexible String Representation Antoon Pardon <antoon.pardon@rece.vub.ac.be> - 2013-09-06 13:10 +0200
  Re: Chardet, file, ... and the Flexible String Representation Ned Batchelder <ned@nedbatchelder.com> - 2013-09-06 07:02 -0400
  Re: Chardet, file, ... and the Flexible String Representation Piet van Oostrum <piet@vanoostrum.org> - 2013-09-06 11:46 -0400
    Re: Chardet, file, ... and the Flexible String Representation Chris Angelico <rosuav@gmail.com> - 2013-09-07 02:04 +1000
    Re: Chardet, file, ... and the Flexible String Representation random832@fastmail.us - 2013-09-06 12:59 -0400
    Re: Chardet, file, ... and the Flexible String Representation Chris Angelico <rosuav@gmail.com> - 2013-09-07 03:04 +1000
    Re: Chardet, file, ... and the Flexible String Representation wxjmfauth@gmail.com - 2013-09-09 07:28 -0700
      Re: Chardet, file, ... and the Flexible String Representation Ned Batchelder <ned@nedbatchelder.com> - 2013-09-09 12:38 -0400
      Re: Chardet, file, ... and the Flexible String Representation Michael Torrie <torriem@gmail.com> - 2013-09-09 11:05 -0600
        Re: Chardet, file, ... and the Flexible String Representation Steven D'Aprano <steve@pearwood.info> - 2013-09-10 04:58 +0000
      Re: Chardet, file, ... and the Flexible String Representation Terry Reedy <tjreedy@udel.edu> - 2013-09-09 16:47 -0400
      Re: Chardet, file, ... and the Flexible String Representation random832@fastmail.us - 2013-09-10 11:36 -0400
    Re: Chardet, file, ... and the Flexible String Representation random832@fastmail.us - 2013-09-09 14:34 -0400
    Re: Chardet, file, ... and the Flexible String Representation Ian Kelly <ian.g.kelly@gmail.com> - 2013-09-09 13:03 -0600
    Re: Chardet, file, ... and the Flexible String Representation random832@fastmail.us - 2013-09-09 15:27 -0400
    Re: Chardet, file, ... and the Flexible String Representation Serhiy Storchaka <storchaka@gmail.com> - 2013-09-12 00:11 +0300

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