bless { some_scalar        => "blah",
          another_scalar     => "blah",
          some_array         => [],
          an_array_of_arrays => [[1,2,3]["a","b","c"]],
         },$class

##</code><code>##

    $b = $object->{an_array_of_arrays}->[1][1]; 
    # $b has "b"

##</code><code>##

# old
an_array_of_arrays => $ref_to_array1[$ref_to_array2],

# new
an_array_of_arrays => [$ref_to_array1,$ref_to_array2],