ch06.051_prob

来自「Perl Best Practices the source code」· 051_PROB 代码 · 共 46 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 @clients = qw( Ackroyd Belushi );

my $client;
 
SEARCH:
for my $some_other_variable_also_named_client (@clients) {
    last SEARCH if $some_other_variable_also_named_client->holding();
}
 
if ($client) {
    $client->resume_conversation();
}



package Ackroyd;
sub holding { return 0 }

sub resume_conversation {
    print "Hi, John...\n";
}

package Belushi;

sub holding { return 1 }

sub resume_conversation {
    print "Hi, John...\n";
}