I'm messing around with dereferencing arrays, and was curious why the following portion of this code involving the hash doesn't work: 
my @array1 = (
'abc',
'def',
'ghi',
'jkl'
);

my $s1 = \@array1;
my $s2 = \$s1; 

my %hash = ( 'key' => $s1 );
my $hash_s = \%hash;

print(@$$s2); # works
print(@$$hash{'key'}); # doesn't work

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If I remove the @, both lines will print out an array reference. I understand how to make it work, just curious about if there's something with hashes that makes them work a little differently? Thanks

In reply to Multilayer dereferencing question by Anonymous Monk

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