Perl: How to predeclare a two-dimensional array?

Question

After introducing:

use strict;

My 2-dimensional array do not work any more, and I find no description and no example in the documentation how to predeclare them. So, what have I to do?

Answer 1

You declare it in just the same way you would a 1D array:

use strict;
use warnings;

my @AoA =  ( ['a', 'b'], ['foo', 'bar'] );

print Dumper \@AoA;

$VAR1 = [
          [
            'a',
            'b'
          ],
          [
            'foo',
            'bar'
          ]
        ];