Re: How to create multiple keys in a hash

in reply to How to create multiple keys in a hash

If I understand correctly, you want to count the occurences of elements of a list. If so, this might help.

#!/usr/bin/perl 

use strict;
use warnings FATAL => 'all';

my @colours = (  "red", "green", "yellow", "green", "yellow", "green",
+ "blue", "red", "green");

my %count;

$count{ $_ }++ for @colours;

print "$_\t$count{ $_ }\n" for keys %count;

__END__
output
green   4
blue    1
red     2
yellow  2
[download]

Hope this helps

thinker

In Section Seekers of Perl Wisdom