my %hash1 = (); # Initialize empty hash. Perhaps unnecessary?
Yes, this is unnecessary. Either:
my %hash1;
or:
my %hash1 = (
"1", "20",
"2", "20",
"4", "19",
"5", "20",
"10", "20",
"6", "18");
Fat commas are nice too: 1 => 20,
I created a sub "isNull" as a homegrown replacement for "exists". The idea is to check your assumptions (and data) before you operate on that data.
Your
isNull sub is not need with your data. Try:
unless ($hash2{$thisKey}) {
instead of:
if (isNull(\%hash2, $thisKey)) {
-
Are you posting in the right place? Check out Where do I post X? to know for sure.
-
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
-
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
-
Want more info? How to link
or How to display code and escape characters
are good places to start.