the output like this:

use warnings;
use strict 'refs';
(my $heap = {});
($$heap{'172.16'} = 1);
print("\$heap->{'172.16'}: $$heap{'172.16'}\n");
print("\$heap->{172.16}: $$heap{172.16}\n");
($$heap{'127.2'}{'127.1.0.2'} = 2);
print("\$heap->{'127.2'}{'127.1.0.2'}: $$heap{'127.2'}{'127.1.0.2'}\n"
+);
print("\$heap->{127.2}{127.1.0.2}: $$heap{127.2}{127.1.0.2}\n");
[download]

and have the same executed result:

$heap->{'172.16'}: 1
$heap->{172.16}: 1
$heap->{'127.2'}{'127.1.0.2'}: 2
Use of uninitialized value in concatenation (.) or string at testHash3
+.pl line 25.
$heap->{127.2}{127.1.0.2}:
[download]

---

---

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! —

• How do I compose an effective node title?
• How do I post a question effectively?
• Markup in the Monastery

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:
	&		&
	<		&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.