I can't seem to wrap my brain around how I could do that.

First stab: recursion

#!/usr/bin/env perl 
use strict;
use warnings;
use Ref::Util qw/is_hashref/;

my $bighr = {
    foo => 1,
    bar => {
        baz => 'quux'
    }
};

my $l = 0;
parse_me ($bighr);

sub parse_me {
    my $h = shift;
    for my $key (keys %$h) {
        if (is_hashref $h->{$key}) {
            $l += 4;
            parse_me ($h->{$key});
            $l -= 4;
        } else {
            print ' ' x $l . "Key: $key\n";
        }
    }
}

[download]

There should be enough in there to get you going.

In reply to Re: Traversing a hash of hashes of hashes by hippo
in thread Traversing a hash of hashes of hashes by kcorj2244

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