[tpm] dereferencing anonymous hashes

Fulko Hew fulko.hew at gmail.com
Tue Apr 10 12:25:48 PDT 2007

On 4/10/07, Rob Janes <janes.rob at gmail.com> wrote:
> you're a php guy, right?

Nope.  Never seen PHP in my life... ain't gonna start now!

>  $x = (); is a list assignment to a scalar.  scalar conversion results in
> the scalar ($x that is) being assigned the count of the number of items in
> the list.  0 or zero.
>  $x = {}; assigns a reference to an anonymous hash.

OK, so I was getting frustrated and made a whole lot of transcription
errors to boot. :-(

The question should have been... whats the difference between:

%x = ();  and
%x = {};

because what fixed my problem was (transcribing correctly this time):

my %device = {};
$config{$cfg}{device} = \%device;
$device{$devid}{status} = 'OK';


my %device = %{$config{$cfg}{device}};
$status = $device{$devId}{status};

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