#!/usr/bin/perl

use strict; # https://perlmonks.org/?node_id=11135697
use warnings;

my $structure = 
{
  "tool" => "A",
  "version" => "1.3",
  "dependencies" => [
    {
      "tool" => "B",
      "version" => "8.23",
      "dependencies" => []
    },
    {
      "tool" => "C",
      "version" => "2.1",
      "dependencies" => [
        {
          "tool" => "D",
          "version" => "1.1",
          "dependencies" => []
        }
      ]
    }
  ]
};

printsubstructure($structure);

sub printsubstructure
  {
  my $hashref = shift;
  printsubstructure($_) for @{ $hashref->{dependencies} };
  print "$hashref->{tool}/$hashref->{version}\n";
  }

[download]

In reply to Re: Postorder on hash structure by tybalt89
in thread Postorder on hash structure by ovedpo15

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.