well, i don't know if you are familiar with SQLite (or MySQL), i often get stuck with processing large amount of data, at first i also tried to do it through hashes and arrays, but then i just gave up on it. my advise would be to use one of the freely available databases like SQLite or MySQL. just import data, sort it (order by), and when processing it retrieve line by line of data and do what ever you want to do with it.

this is memory efficient, but certainly slower way to do it

SQLite

example on how to use it through DBI and it would be usfull to check out DBD::SQLite

plus there are tons of concrete examples on perlmonks !!!


In reply to Re: Memory Efficient Alternatives to Hash of Array by baxy77bax
in thread Memory Efficient Alternatives to Hash of Array by neversaint

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.