Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl-Sensitive Sunglasses
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??

The following code is taken from a game engine and manipulates "keys" of the form (\w+\.)+\w+. Each word represents a hash level.

our %GameState; # The entire game context # looks up a key (passed as the first param) and adds the value # (if provided as second param). Returns a reference to the value # list. sub Entity { my ($key, $value) = @_; return undef if ! defined $key; my $hash = \%GameGlobals::GameState; my @keys = split /\./, $key; map {$_ = lc $_} @keys; while (@keys && defined $hash) { my $key = shift @keys; if (@keys) { $hash->{$key} = {} if ! exists $hash->{$key}; $hash = $hash->{$key}; } else { $hash->{$key} = [] if ! exists $hash->{$key}; push @{$hash->{$key}}, $_[1] if defined $value; return \$hash->{$key}; } } }

DWIM is Perl's answer to Gödel

In reply to Re: unknown number of dimensions of a multidimensional hash by GrandFather
in thread unknown number of dimensions of a multidimensional hash by Otogi

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!
  • 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, 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, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • Outside of code tags, you may need to use entities for some characters:
            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.
  • Log In?
    Username:
    Password:

    What's my password?
    Create A New User
    Chatterbox?
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others cooling their heels in the Monastery: (7)
    As of 2014-09-21 22:15 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      How do you remember the number of days in each month?











      Results (176 votes), past polls