ch06.082_best

来自「Perl Best Practices the source code」· 082_BEST 代码 · 共 30 行

##############################################################################
##   Code fragment (Recommended) from Chapter 6 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;

Readonly my $EMPTY_STR => q{};
my $name = 'Evelyn Waugh, PhD';

           # Name format...                            # Salutation...
my $salute = $name eq $EMPTY_STR                       ? 'Dear Customer'
           : $name =~ m/ \A((?:Sir|Dame) \s+ \S+) /xms ? "Dear $1"
           : $name =~ m/ (.*), \s+ Ph[.]?D \z     /xms ? "Dear Dr $1"
           :                                             "Dear $name"
           ;


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