Re: How to waste computer memory?

From	Marko Rauhamaa <marko@pacujo.net>
Newsgroups	comp.lang.python
Subject	Re: How to waste computer memory?
Date	2016-03-18 17:26 +0200
Organization	A noiseless patient Spider
Message-ID	<87twk3oli0.fsf@elektro.pacujo.net> (permalink)
References	<a2639027-c69c-46df-a7a5-45a677b9e01d@googlegroups.com> <265377f4-741d-4aa2-9338-239f56f8bc57@googlegroups.com> <mailman.302.1458284448.12893.python-list@python.org> <lf5y49gw5s9.fsf@ling.helsinki.fi> <mailman.327.1458313179.12893.python-list@python.org>

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Michael Torrie <torriem@gmail.com>:

> On 03/18/2016 02:26 AM, Jussi Piitulainen wrote:
>> I think Julia's way of dealing with its strings-as-UTF-8 [2] is more
>> promising. Indexing is by bytes (1-based in Julia) but the value at a
>> valid index is the whole UTF-8 character at that point, and an
>> invalid index raises an exception.
>
> This seems to me to be a leaky abstraction.

It may be that Python's Unicode abstraction is an untenable illusion
because the underlying reality is 8-bit and there's no way to hide it
completely.

There's no problem providing pure Unicode strings. Things get iffy when
Python's OS abstraction pretends sys.stdin is text or filenames are
strings.

> Julia's approach is interesting, but it strikes me as somewhat broken
> as it pretends to do O(1) indexing, but in reality it's still O(n)

If the underlying encoding is 8-bit, converting it to an O(1) structure
would still be O(n).

Marko

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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