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From: Phil Brodd [mailto:philip-brodd@[...].edu]
>  
>  I've been playing with XML::Simple, which seems quite nice.  
>  What I don't understand is how to refer to the entire array
>  that is the value of the 'request' key below, or how to iterate
>  through its elements.
>  
>  I am able to reference individual elements of the array with
>  $hashref->{request}->[index], but how do I refer to the whole thing?

$hashref-> {request} is an array reference, so you could loop through
all the elements like this:

foreach my $request ( @{$hashref-> {request}} ) {
  print $request-> {email}->[0], "\n";
}

similarly, you could extract the values to an array variable like this:

  my @requests = @{$hashref-> {request}};

or you could get the index of the last one like this

  my $last = $#{$hashref-> {request}}



I notice that you set forcearray to 1 in your code.  That's good but
does introduce a level of inconvenience.  A better way is to only
apply forcearray to those elements which can occur more than once.

For example, you can obviously have multiple <request>  elements but
perhaps each request will have only one <user_id> .  If you set
forcearray like this:

  forcearray =>  [ 'request' ]

Then you can refer to the user_id for a particular request like this:

  $hashref-> {request}->[$i]->{user_id}

instead of like this:

  $hashref-> {request}->[$i]->{user_id}->[0]

Regards
Grant
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