Beefy Boxes and Bandwidth Generously Provided by pair Networks
No such thing as a small change
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??
Very interesting! Thanks for the new idea!

I lost my server connection for some reason and so I tested this on my laptop and I do see a very good improvement with the your modification.

update: corrected <> with $_ per pijll post

C:\>perl -lne "BEGIN{$,=','} print+(split',',$_)[0..14] " > junk
this finishes in about 14 seconds.... corrected timing

C:\>perl -lanF, -e "BEGIN{ $,=\",\"} print @F[0..14];" numbers.csv > j +unk
this takes about 18 seconds

I don't have a timing utility in Windows so the times are just wallclock times.

I guess windows is faster because the process run at 100% CPU (or whatever is required i guess?). On the UNIX servers the process might be more time-shared?

My laptop is 1.6G Centrino/1GB Ram/perl, v5.6.1

cheers

SK Update: Thanks pijll, the time it takes to run your version of the code is almost same as the one that uses -n.


In reply to Re^4: cut vs split (suggestions) by sk
in thread cut vs split (suggestions) by sk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":



  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.
  • Log In?
    Username:
    Password:

    What's my password?
    Create A New User
    Chatterbox?
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others chilling in the Monastery: (6)
    As of 2015-07-29 06:18 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      The top three priorities of my open tasks are (in descending order of likelihood to be worked on) ...









      Results (260 votes), past polls