You may wish to wrap your code in <code> tags next time. I'm not 100% sure what you're asking, but perhaps this code example will answer your question:
sub function {
my $hashref = shift;
$hashref->{three} = 3;
}
my %hash = ( one => 1, two => 2 );
&function(\%hash);
print join(", ", keys %hash); # one, two, three
You can also have the same behavior like this:
sub function (%) {
my %hashref = shift;
...
}
&function(%hash); # passes %hash as a ref
Then there's this:
sub function {
my %hash = %{shift}; # de-references
$hash{three} = 3; # Does not affect the real %hash!
}
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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>
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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).
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Want more info? How to link
or How to display code and escape characters
are good places to start.
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