Re: Hash or array & retrieving hash value

[Rob Dixon]

On 16/06/2011 02:15, Grant wrote:

Depending on whether there are one or more sets of values, XML::Simple
either creates a hash or an array, either of which are stored here:

$parsed_response->{Label}->{Image}

My code retrieves the correct value when it's an array but I'm not
sure how to do the same when it's a hash.  I also need to be able to
decide if it's a hash or an array so I can execute the appropriate
code for retrieving the value.  Can anyone show me how to do this?

I'm afraid XML::Simple isn't very good at producing consistent data
structures unless it is tweaked a little. Using ForceArray should help;
this is from the documentation

    *   check out "ForceArray" because you'll almost certainly want to turn
        it on

and

  ForceArray =>  1 *# in - important*
    This option should be set to '1' to force nested elements to be
    represented as arrays even when there is only one.

Thanks Rob.  I think ForceArray is what I need but I can't come up
with the right setting.  If I set 'ForceArray =>  1', everything seems
to be forced into an array but I don't want to loop with foreach for
every value I want to retrieve.  I'd like to force only
$parsed_response->{Label}->{Image} into an array but I can't find the
correct setting for ForceArray.

I presume you have tried

  ForceArray => ['Image']

For further help you must show more of your source XML and examples of
the two forms of Perl data structure that you are seeing.

Rob

--
To unsubscribe, e-mail: beginners-unsubscr...@perl.org
For additional commands, e-mail: beginners-h...@perl.org
http://learn.perl.org/