Hi,
I have a data file which contains a hash of arrays.
(The purpose of which is to lookup allowed columns to search my database by)
sort.pl
{
    0  => ['price'],
    23 => ['brightness', 'resolution', 'weight'],
}

[download]


I can access this data with the following code:
use strict;
my $sort;
unless ($sort = do ('G4 HD:Desktop Folder:sort.pl')) {
     die ("Could not open config file");
}
print $sort->{23}[0];

[download]
Which returns brightness
What I wish to do is search through one of the arrays to check if it contains a particular value.
If I do
print $sort->{23};
I get
ARRAY(0x2b9a4388)
but I don't know how to dereference this.

What I'd like to do is something like this,
my $search = 'price';
my $column = 23;
foreach ($sort->{$column}) {
  #(search each indices for $search)
}

[download]

In reply to Dereferencing a hash reference to a Hash of Arrays by fireartist

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.