- find directories with spreadsheets of interest

Please define "spreadsheets of interest" How do you think you could take this files apart and not another spreadsheets uninteresting? that's a point that you'll need to solve

i need information from ALL of the spreadsheets in one directory

read about glob and wilcards like *.ods, *.xls or so

extension (file type) of your spreadsheets?

and i need information from a lines around $num_line-2, $num_line-2 and $num_line+1.

Didn't understand this part, sorry

- read all spreadsheets from a directory simultaneously

why simultaneoulsy? read file by file in the list provided by glob. A 1M file shouldn't be a real trouble to process

- calculate SOME_STUFF($num_line) on each line

what type of stuff?

- analyze and display the results

Probably the easy part

In reply to Re: Design elegance : How to best design this simple program ? by pvaldes
in thread Design elegance : How to best design this simple program ? by mascip

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!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • 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, details, 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, summary, 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.