Hi All, I was practicing with recursion in Perl and wrote a sub to reverse arrays of arrays of arrays... of arrays. After a little trial and error I got it working: 
#!/usr/local/bin/perl


use strict;
use warnings;
use Data::Dumper;


my @array1 = (['A', 'B'], 1, 2, 3, ['One', 'Two', 'Three', ['I', 'II',
+ 'III'], 'Four'], 4);


print Dumper (\@array1);
recReverse (\@array1);
print "\n===============Reversed================\n";
print Dumper (\@array1);
my $count = 0;
sub recReverse
{
    my $ref2array = shift;
    if (ref $ref2array eq 'ARRAY')
    {
        my @newarray = reverse (@$ref2array);
        @$ref2array = @newarray;
        for my $item (@{$ref2array})
        {
            recReverse($item);
        }
    }
}

[download]
One thing I realized that there is the difference between 
my @newarray = reverse (@$ref2array);
        @$ref2array = @newarray;

[download]
and 
my @newarray = reverse (@$ref2array);
        $ref2array = \@newarray;

[download]
I was under the impression that both do the same thing, however I only realized that they don't. Can someone explain the difference. I mean I have seen it in action but not sure I fully understand the concept. Thanks.

In reply to Array Reference Question by Hameed

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