Re^3: Finding max value from a unique tag from XML

[vagabonding electron]

in reply to Re^2: Finding max value from a unique tag from XML
in thread Finding max value from a unique tag from XML

Thank you Jenda!
Could you please point me to the documentation of $_[4] approach?

[afoken]

$_[4] is the fifth element of @_, the array containing subroutine arguments. $_[4] is used in both subroutines in the @rules array, and it is used as a hash reference. The @rules array is passed to XML::Rules->new(...). I would expect XML::Rules to call one or both of the subroutines while parsing the XML document.

And, lo and behold, XML::Rules does call the subroutines passed in @rules. The documentation clearly states that the fifths parameter is the parser object (a blessed hash reference), documented with the name $parser. It offers two workspaces, $parser->{'pad'} and $parser->{'parameters'} to "store any data you need".

Alexander

[vagabonding electron]

Danke!