Item Description: takes a variable ( or reference to a variable) and 'unrolls' or dumps it out for inspection
Review Synopsis: invaluable for object design and debugging complicated data structure
Data::Dumper is in the standard Perl distribution. it's probably the easiest module to use, just issue a 'use Data::Dumper' call, and then either print to STDOUT ( with 'print Dumper \@foo ') or stick into some html used by an application ( i prefer to wrap it in <pre> tags, so the output isn't mangled.) Data::Dumper also works keenly with objects, and gives you the class into which your variable is blessed. (with makes debugging object relations really quick.)