This is one of the problems I was playing around with in my Mastering Perl chapter on tied variables (not that tie is the solution, just that the chapter was on tied variables). You can see the early version of all that stuff on my Mastering Perl website.

The upcoming issue of The Perl Review then attacks the same problem with bit vectors since in another article Eric Maki used the technique for Sudoku puzzles. If you're really in a bind I'll send you the draft of the article. :)

--
brian d foy <brian@stonehenge.com>
Subscribe to The Perl Review

In reply to Re: A better (problem-specific) perl hash? by brian_d_foy
in thread A better (problem-specific) perl hash? by srdst13

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.