ch08.049_best

来自「Perl Best Practices the source code」· 049_BEST 代码 · 共 34 行

##############################################################################
##   Code fragment (Recommended) from Chapter 8 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 $addr = '1600 Pennsylvania Avenue, Washington DC, USA';

my $country_pos  = 41;
my $COUNTRY_LEN  = 3;
my $country_code = 'USA';

my %country_name = (
    USA => 'The United States of America',
);

substr $addr, $country_pos, $COUNTRY_LEN , $country_name{$country_code};

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