ch06.047_best

来自「Perl Best Practices the source code」· 047_BEST 代码 · 共 54 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;

my @candidates = (
    'Obama',
    'Gore [NO]',
    'Nixon [NO]',
);

my %have_reconsidered;

for my $name (@candidates) {
    if ($name =~ m/\[ NO \] \z/xms) {
        $name = reconsider($name);
 
        $have_reconsidered{lc($name)}++;
    }
    else {
        print "New candidate: $name\n";
 
        $name .= accept_or_reject($name);
 
        $have_reconsidered{lc($name)} = 0;
    } 
}


use Data::Dumper 'Dumper';
warn Dumper [ @candidates ];
warn Dumper [ \%have_reconsidered ];


sub reconsider {
    my ($candidate) = @_;
    return $candidate;
}

sub accept_or_reject {
    return ' [YES]';
}