Perl getting hash from reference to an array containing a reference

Question

I have the following code that returns a reference to an array with one element. That element contains a reference to a hash. I would like to eliminate this double referencing and work either with a copy of the hash or directly on the hash itself so I can use the keys.

Here's the code:

my $extracted = $db_obj->extract('source_tag', $source_tag);

So $extracted contains a reference to an array. That array has a single element, a reference to a hash. The hash looks like this when I use Data::Dumper:

    $VAR1 = \\[
              {
                'data_center' => 'qe76',
                'description' => 'locator',
                'abs_delta_dollar_percent' => undef,
                'content_type' => 'Raw',
                'source_tag' => 'hg9efx4',
                'producer' => 'partner',
                'id' => '15282',
                'storage_type' => 'box',
                'storage_path' => '/mnt/storage/2012'
              }
            ];

I'd like to be able to directly access the hash so I can use the keys to grab the values. How do I remove this double referencing?

dgw · Accepted Answer · 2012-01-27 18:12:04Z

1

my %hash = %{ $db_obj->extract('source_tag', $source_tag)->[0] } ;

answered Jan 27, 2012 at 18:12

dgw

13.7k11 gold badges60 silver badges56 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Dmitry Ovsyanko · Accepted Answer · 2012-01-27 18:08:02Z

1

my $extracted = $db_obj->extract('source_tag', $source_tag) -> [0];

answered Jan 27, 2012 at 18:08

Dmitry Ovsyanko

1,41611 silver badges6 bronze badges

Comments

Axeman · Accepted Answer · 2012-01-27 22:32:24Z

0

That seems to be:

$$$$result[0] 
or 
$$$result[0]

if you didn't mean that double backslash.

answered Jan 27, 2012 at 22:32

Axeman

29.9k2 gold badges50 silver badges104 bronze badges

Collectives™ on Stack Overflow

Perl getting hash from reference to an array containing a reference

3 Answers 3

Comments

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related