I wonder if we have an array as well?....

I was meandering through the Class::Delegation docs when I happened upon this:

a little-known feature of the -> operator is that if a hash access is performed on a string, that string is taken as a symbolic reference to a package hash variable in the current package

Now of course we won't ask where in the Perl docs this is documented, because it probably isn't. But let us give an example of it

use strict;
package Mr::Rogers;

%Mr::Rogers =
    ( instrument => 'violin',
      clothing   => 'cardigan',
      deameanor  => 'mild',
      age        => sub { rand 20 + rand 60 } ,
      habitat    => 'US-unknown');


map { __PACKAGE__->{cookies_eaten}++ if (rand 10 > 5) } (1..5) ;

warn __PACKAGE__->{cookies_eaten};

[download]

In reply to self-referent hash for your packages by princepawn

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.