ch06.062_best

来自「Perl Best Practices the source code」· 062_BEST 代码 · 共 45 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 @disqualified_candidates = qw(
    Nixon
    Washington
    Clinton
    Bush
);
open my $headline, '>-' or croak $OS_ERROR;

use List::Util qw( first );
 
# Find a juicy story...
my $scapegoat 
    = first { chopped_down_cherry_tree($_) }  @disqualified_candidates;
 
# Otherwise victimize someone at random...
if (!defined $scapegoat) {
    $scapegoat = $disqualified_candidates[rand @disqualified_candidates];
}
 
# Publish and be-damn...
print {$headline} "Disgraced $scapegoat Disqualified From Election!!!\n";



sub chopped_down_cherry_tree {
    my ($name) = @_;
    return $name eq 'Washington';
}