robinbowes,
my ($one, $two, $three) = qw(1 2 3); # works with warnings and stric +tures
You are of course correct about unpack returning the correct number of values. I am a novice in that regard, so I leave the style up to you.

Auto-vivication is the action by which a hash key that didn't previously exist gets created. This may or may not be intentional. Consider:

#!/usr/bin/perl -w use strict; my %hash; print "wow\n" if $hash{foo}{bar}; print $_, $/ for keys %hash;
Just by testing if the second level key 'bar' was true, 'foo' was automatically created. In the example code that I gave you, the hash keys were being auto-vivified intentionally in a hash slice. Sometimes it can be unintentional.

Cheers - L~R


In reply to Re: Re: Re: Data structure for this... by Limbic~Region
in thread Data structure for this... by robinbowes

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.