If 10 "Mg" is just the size this should result in 1e6 words.

IIRC does one hash entry result approx. 100 bytes overhead, so putting all errors in a hash should be feasible even on my pity NetBook.

Parse the pronunciation-file line by line and build a lookup hash.

Then parse the other file per line and look for missing entries.

If you really have RAM problems try splitting the hash into several disjunct ones (like for every 10% of the file) and parse the second file once for each hash.

Shouldn't take longer then seconds (at most minutes)

HTH! :)

Cheers Rolf

( addicted to the Perl Programming Language)

In reply to Re: Comparing large files by LanX
in thread Comparing large files by Herbert37

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.