XML::Simple tries to provide a simple interface
but it does assume a knowledge of Perl references. I
The most common mistake with XML::Simple is to ignore the
advice in the docs about the ForceArray and KeyAttr options. Always set ForceArray => 1 if you're not sure, and setting
it to an array of element names is probably the best way.
I also recommend setting KeyAttr =>  unless you know
what you want. In the case of the original XML snippet,
KeyAttr => 'DlrItemNum' might be useful.
I suspect the line that says if ( ref $thing eq "SCALER" ); will never get executed.
If you're processing big XML files, XML::SAX might be a
good answer. XML::SAX::ByRecord from Barrie Slaymaker's XML::SAX::Machines could be very handy
once you have your head around SAX.
But, XML::Twig is possibly the best answer for
simple record oriented processing.
Edit: Sorry, I typed 'always set ForceArray => 0 ...' when I meant 'ForceArray => 1 ...'
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