ch12.087_best

Perl Best Practices the source code

##############################################################################
##   Code fragment (Recommended) from Chapter 12 of "Perl Best Practices"   ##
##     Copyright (c) O'Reilly & Associates, 2005. All Rights Reserved.      ##
##  See: http://www.oreilly.com/pub/a/oreilly/ask_tim/2001/codepolicy.html  ##
##############################################################################


# Standard modules...
use strict;
use warnings;
use IO::Prompt;
use Carp;
use English qw( -no_match_vars );
use Data::Alias;
use Readonly;

my $input = '*&^^&%$***&^*&*%%^&12AB.675A87B%^&*%&*%&%';

use Regexp::Common;
 
# The alien hardware device requires duodecimal floating-point numbers...
Readonly my $NUMBER => $RE{num}{real}{-base=>12}{-places=>'6,9'}{-keep};
 
# and later...
 
my ($number) 
    = $input =~ m/$NUMBER/xms;

use Data::Dumper 'Dumper';
warn Dumper [ $number ];