This is a reference to a list 
use Data::Dumper;
print Dumper( \( 1, 3, 4, 6, $_, %_ ) );
__END__
$VAR1 = \1;
$VAR2 = \3;
$VAR3 = \4;
$VAR4 = \6;
$VAR5 = \undef;
$VAR6 = {};

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A list is not a data structure.

In reply to that is a reference to an array by Anonymous Monk
in thread Compilation failed, Vendor::Amazon, Vendor::BarnesNoble by luisfagundes

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