I'm assuming this is related to a markup language such as HTML or XML.

I'm unsure whether you are using the data to create a document or if you are extracing the data from a document. If one of these, I would suggest you use one of the HTML:: or XML:: modules on CPAN. There may be others with which I'm unfamiliar; XML::LibXML is the only one that I have a reasonable working knowledge of.

In terms of how you might use anonymous arrays and hashes, behind the <readmore> is a script which creates a data structure to represent the following HTML fragment (and prints the content of the <em> element). 

<html lang="en">
    <head>
    </head>
    <body>
        <h1>Heading1</h1>
        <p id="para1" class="first-para">This is <em>emphasied</em>. A
+nd this is not.</p>
    </body>
</html>

[download]

Note: This code is for illustrative purposes only - I am not suggesting you include it in an application. 

use strict;
use warnings;

my $ra_web_page = [
    {
        type        => 'tag',
        element     => 'html',
        attributes  => {
            lang    => 'en',
        },
        content     =>  [
            {
                type        => 'tag',
                element     => 'head',
                attributes  => {
                },
                content     => [
                ],
            },
            {
                type        => 'tag',
                element     => 'body',
                attributes  => {
                },
                content     => [
                    {
                        type        => 'tag',
                        element     => 'h1',
                        attributes  => {
                        },
                        content     => [
                            {
                                type    => 'string',
                                value   => 'Heading 1',
                            },
                        ],
                    },
                    {
                        type    => 'tag',
                        element => 'p',
                        attributes  =>  {
                            id      => 'para1',
                            class   => 'first-para',
                        },
                        content     => [
                            {
                                type    => 'string',
                                value   => 'This is ',
                            },
                            {
                                type        =>  'tag',
                                element     => 'em',
                                attributes  => {
                                },
                                content     => [
                                    {
                                        type    => 'string',
                                        value   => 'emphasised',
                                    },
                                ],
                            },
                            {
                                type    => 'string',
                                value   => '. And this is not.',
                            },
                        ],
                    },
                ],
            },
        ],
    },
];

my $em_text = $ra_web_page->[0]{content}[1]{content}[1]{content}[1]{co
+ntent}[0]{value};

print "EM text = $em_text\n";

[download]

This has probably raised further questions. Ask away.

Regards,

PN5

In reply to Re: Introduction to anonymous arrays and hashes by Prior Nacre V
in thread Introduction to anonymous arrays and hashes by sulfericacid

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.