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Re: Iterate from 2nd element of a huge list

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Em 01-02-2012 04:55, Cameron Simpson escreveu:
> On 01Feb2012 03:34, Paulo da Silva <p_s_d_a_s_i_l_v_a@netcabo.pt> wrote:

> | BTW, iter seems faster than iterating thru mylist[1:]!
> 
> I would hope the difference can be attributed to the cost of copying
> mylist[1:]. 
I don't think so. I tried several times and the differences were almost
always consistent.

I put mylist1=mylist[1:] outside the time control. iter still seems a
little bit faster. Running both programs several times (10000000
elements list) I only got iter being slower once!

But, of course, most of the difference comes from the copy.

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Iterate from 2nd element of a huge list Paulo da Silva <p_s_d_a_s_i_l_v_a@netcabo.pt> - 2012-02-01 01:39 +0000
  Re: Iterate from 2nd element of a huge list Cameron Simpson <cs@zip.com.au> - 2012-02-01 13:02 +1100
  Re: Iterate from 2nd element of a huge list duncan smith <buzzard@urubu.freeserve.co.uk> - 2012-02-01 02:31 +0000
  Re: Iterate from 2nd element of a huge list Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-02-01 02:43 +0000
  Re: Iterate from 2nd element of a huge list Paulo da Silva <p_s_d_a_s_i_l_v_a@netcabo.pt> - 2012-02-01 03:16 +0000
    Re: Iterate from 2nd element of a huge list Paulo da Silva <p_s_d_a_s_i_l_v_a@netcabo.pt> - 2012-02-01 03:34 +0000
      Re: Iterate from 2nd element of a huge list Cameron Simpson <cs@zip.com.au> - 2012-02-01 15:55 +1100
        Re: Iterate from 2nd element of a huge list Paulo da Silva <p_s_d_a_s_i_l_v_a@netcabo.pt> - 2012-02-02 07:23 +0000
          Re: Iterate from 2nd element of a huge list Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-02-02 07:38 +0000
    Re: Iterate from 2nd element of a huge list Arnaud Delobelle <arnodel@gmail.com> - 2012-02-01 07:09 +0000
    Re: Iterate from 2nd element of a huge list Peter Otten <__peter__@web.de> - 2012-02-01 09:11 +0100
    Re: Iterate from 2nd element of a huge list Arnaud Delobelle <arnodel@gmail.com> - 2012-02-01 10:54 +0000
  Re: Iterate from 2nd element of a huge list Paul Rubin <no.email@nospam.invalid> - 2012-02-01 01:25 -0800
    Re: Iterate from 2nd element of a huge list Stefan Behnel <stefan_ml@behnel.de> - 2012-02-01 12:28 +0100

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