How about using a reference to an array. Here's a little ditty that builds the kind of hash for which you're looking and then prints out the results:
use strict;
use warnings;
use diagnostics;
use Data::Dumper;
my %hash;
my $key;
my $value;
my @data = ("foo",1, "bar",2, "foo",3, "baz",4);
while ($key = shift (@data))
{
$value = shift (@data);
# push the value on the array
push @{$hash{$key}}, $value;
}
print Dumper \%hash;
Note: you have to create the anonymous reference -- you can't just push a value if the key doesn't exist.
Update: apparently you can just push the value.
-
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.
|