ch06.044_prob

来自「Perl Best Practices the source code」· 044_PROB 代码 · 共 53 行

##############################################################################
## Code fragment (NOT 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 (@candidates) {
    if (m/\[ NO \] \z/xms) {
        $_ = reconsider($_);
 
        $have_reconsidered{lc()}++;
    }
    else {
        print "New candidate: $_\n";
 
        $_ .= accept_or_reject($_);
 
        $have_reconsidered{lc()} = 0;
    } 
}

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


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

sub accept_or_reject {
    return ' [YES]';
}