Hi all! I'm a new Perl programmer and I'm trying to output combinations of numbers (1 to 10) to a file, but all I can get as output is a list of "ARRAY(0x4eeeec)" (for instance), both in the screen and written on the file. I've searched a little all over the place (Perl Monks included) but I can't find a similar situation / problem. Since I'm a new Perl user, I think my code is printing not an actual value but an address - I guess I'm misusing the iterator, but I can't find out why and how to fix it. Any help will be greatly appreciated. Thanks, Joćo Fernandes 

#!/usr/bin/perl
use strict;
use warnings;

use Algorithm::Combinatorics qw(combinations);

my @data = qw(1 2 3 4 5 6 7 8 9 10);
my $k = 4;

open(my $output, ">", "combinations.txt") or die "Can't open combinati
+ons.txt: $!";

my $iter = combinations(\@data, $k);

while (my $combination = $iter->next)
{
    print "$combination\n";
    print $output "$combination\n";
}

close $output or die "$output: $!";

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