ch12.118_prob

来自「Perl Best Practices the source code」· 118_PROB 代码 · 共 33 行

##############################################################################
## Code fragment (NOT RECOMMENDED) from Chapter 12 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 @EXIT_WORDS => qw( 
    q  quit  bye  exit  stop  done  last  finish  aurevoir 
);

Readonly my $EXIT_WORDS => join '|', @EXIT_WORDS;
 
# Quit command has several variants...

COMMAND:
for my $cmd ( qw( hi how are you finish) ) {
    last COMMAND if $cmd =~ m{\A (?: $EXIT_WORDS ) \z}xms;
    print "Executing: $cmd\n";
}