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#!/usr/bin/env perl

...
catch {
    Carp::confess $!;
    };

title1|title2|pages|author
Perl Best Practices|hound|a few|Damian Conway
Learning Perl|llama|thin|Randal Schwartz
Programming Perl|camel|many|Larry Wall

$field_aref = \[                            # fields
                  'title1',
...
                  'Randal Schwartz'
                ];
  at data.plx line 30.