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Re: Micro Python -- a lean and efficient implementation of Python 3

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On 2014-06-04 14:57, Marko Rauhamaa wrote:
> > If you use UTF-8 for everything, then you end up in a world where
> > string-indexing (see ChrisA's other side thread on this topic) is
> > no longer an O(1) operation, but an O(N) operation.  
> 
> Most string operations are O(N) anyway. Besides, you could try and
> be smart and keep a recent index cached so simple for loops would
> be O(N) instead of O(N**2). So the idea of keeping strings
> internally in UTF-8 might not be all that bad.

As mentioned elsewhere, I've got a LOT of code that expects that
string indexing is O(1) and rarely are those strings/offsets reused
I'm streaming through customer/provider data files, so caching
wouldn't do much good other than waste space and the time to maintain
them.

If I knew that string indexing was O(something non constant), I'd
have retooled my algorithms to take that into consider, but that
would be a lot of code I'd need to touch.

-tkc

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Re: Micro Python -- a lean and efficient implementation of Python 3 Paul Sokolovsky <pmiscml@gmail.com> - 2014-06-04 00:41 +0300
  Re: Micro Python -- a lean and efficient implementation of Python 3 Rustom Mody <rustompmody@gmail.com> - 2014-06-03 20:37 -0700
    Re: Micro Python -- a lean and efficient implementation of Python 3 Chris Angelico <rosuav@gmail.com> - 2014-06-04 13:52 +1000
      Re: Micro Python -- a lean and efficient implementation of Python 3 Rustom Mody <rustompmody@gmail.com> - 2014-06-03 21:40 -0700
        Re: Micro Python -- a lean and efficient implementation of Python 3 Ian Kelly <ian.g.kelly@gmail.com> - 2014-06-03 23:02 -0600
        Re: Micro Python -- a lean and efficient implementation of Python 3 Chris Angelico <rosuav@gmail.com> - 2014-06-04 17:16 +1000
          Re: Micro Python -- a lean and efficient implementation of Python 3 Steven D'Aprano <steve@pearwood.info> - 2014-06-04 07:42 +0000
            Re: Micro Python -- a lean and efficient implementation of Python 3 Paul Rubin <no.email@nospam.invalid> - 2014-06-04 00:58 -0700
              Re: Micro Python -- a lean and efficient implementation of Python 3 Robin Becker <robin@reportlab.com> - 2014-06-04 11:06 +0100
              Re: Micro Python -- a lean and efficient implementation of Python 3 Tim Chase <python.list@tim.thechases.com> - 2014-06-04 06:01 -0500
                Re: Micro Python -- a lean and efficient implementation of Python 3 Marko Rauhamaa <marko@pacujo.net> - 2014-06-04 14:57 +0300
                Re: Micro Python -- a lean and efficient implementation of Python 3 Tim Chase <python.list@tim.thechases.com> - 2014-06-04 07:25 -0500
                Re: Micro Python -- a lean and efficient implementation of Python 3 Paul Rubin <no.email@nospam.invalid> - 2014-06-04 11:25 -0700
              Re: Micro Python -- a lean and efficient implementation of Python 3 Robin Becker <robin@reportlab.com> - 2014-06-04 12:53 +0100
                Re: Micro Python -- a lean and efficient implementation of Python 3 Marko Rauhamaa <marko@pacujo.net> - 2014-06-04 15:17 +0300
                Re: Micro Python -- a lean and efficient implementation of Python 3 Robin Becker <robin@reportlab.com> - 2014-06-04 13:31 +0100
                Re: Micro Python -- a lean and efficient implementation of Python 3 Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-06-04 13:51 +0000
                Re: Micro Python -- a lean and efficient implementation of Python 3 wxjmfauth@gmail.com - 2014-06-10 00:32 -0700
                Re: Micro Python -- a lean and efficient implementation of Python 3 wxjmfauth@gmail.com - 2014-06-10 02:13 -0700
              Re: Micro Python -- a lean and efficient implementation of Python 3 Tim Chase <python.list@tim.thechases.com> - 2014-06-04 07:21 -0500
              Re: Micro Python -- a lean and efficient implementation of Python 3 Travis Griggs <travisgriggs@gmail.com> - 2014-06-06 09:59 -0700
                Re: Micro Python -- a lean and efficient implementation of Python 3 Roy Smith <roy@panix.com> - 2014-06-06 13:29 -0400
              Re: Micro Python -- a lean and efficient implementation of Python 3 Tim Chase <python.list@tim.thechases.com> - 2014-06-06 21:20 -0500
                Re: Micro Python -- a lean and efficient implementation of Python 3 wxjmfauth@gmail.com - 2014-06-10 12:27 -0700
        Re: Micro Python -- a lean and efficient implementation of Python 3 Chris Angelico <rosuav@gmail.com> - 2014-06-04 17:20 +1000
        Re: Micro Python -- a lean and efficient implementation of Python 3 Wolfgang Maier <wolfgang.maier@biologie.uni-freiburg.de> - 2014-06-04 10:00 +0200
      Re: Micro Python -- a lean and efficient implementation of Python 3 Roy Smith <roy@panix.com> - 2014-06-04 14:42 -0400
        Re: Micro Python -- a lean and efficient implementation of Python 3 Rustom Mody <rustompmody@gmail.com> - 2014-06-04 19:06 -0700
          Re: Micro Python -- a lean and efficient implementation of Python 3 Roy Smith <roy@panix.com> - 2014-06-05 09:59 -0400
            Re: Micro Python -- a lean and efficient implementation of Python 3 Chris Angelico <rosuav@gmail.com> - 2014-06-06 01:33 +1000
    Re: Micro Python -- a lean and efficient implementation of Python 3 Steven D'Aprano <steve@pearwood.info> - 2014-06-04 05:20 +0000
      Re: Micro Python -- a lean and efficient implementation of Python 3 Rustom Mody <rustompmody@gmail.com> - 2014-06-03 22:36 -0700
      Re: Micro Python -- a lean and efficient implementation of Python 3 Ian Kelly <ian.g.kelly@gmail.com> - 2014-06-03 23:55 -0600
      Re: Micro Python -- a lean and efficient implementation of Python 3 Terry Reedy <tjreedy@udel.edu> - 2014-06-04 03:00 -0400
      Re: Micro Python -- a lean and efficient implementation of Python 3 Chris Angelico <rosuav@gmail.com> - 2014-06-04 17:10 +1000

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