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my @array = ('cow', 'dog', 'cat');
my $ref_to_array = \@array;

my ($first, $second) = @{$ref_to_array}[0,1]; # prefix
my $third = $ref_to_array->[2]; # deref operator

my @LoL = ();      # empty array
$LoL[0] = [];      # ref to anonymous array
$LoL[0]->[0] = []; # another ref to anonymous array
...
$LoL[0]->[0]->[1]   = 'It's a bird, it's a plane, it's...';
# the shortcut
$LoL[0]->[0][2]     = 'Superman!';