my ($class) = @_;
my @array1 = (1,2,3);
my @array2 = (4,5,6);
my $ref_to_array_1 = \@array1;
my $ref_to_array_2 = \@array2;

#and then:

bless {an_array_of_arrays => $ref_to_array1[$ref_to_array2],
       some_scalar        => "foo-bar",
       },$class;