Hello wise monks,

please, look at this sample code.
#!/usr/bin/perl
use strict;
use warnings;
my %pets;
my $color;

$color="black";
$pets{$color}=\[];
push @${$pets{$color}},"cat";
push @${$pets{$color}},"dog";

$color="while";
$pets{$color}=\[];
push @${$pets{$color}},"rat";
push @${$pets{$color}},"bat";

foreach my $p (values %pets) {
        print "$p\n";
        #^^^this is ref to ref to array?

        print "$$p\n";
        #^^^this is ref to array

        print "@$$p\n\n";
        #^^^this is array
}

[download]
and output: 
push @${$pets{$color}},"rat";
REF(0x815c4d0)
ARRAY(0x815c4e8)
rat bat

REF(0x812ed0c)
ARRAY(0x812ed48)
cat dog

[download]
@$$p looks very strange.
why I can't use @$p.
why $p is ref to ref to array (or maybe is not?) not just ref to array?
I don't understand this. Could anybody help me?

stay in peace
Lukasz

In reply to Cruel references by uksza

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