ch12.049_prob

来自「Perl Best Practices the source code」· 049_PROB 代码 · 共 25 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;


# Alphabetics-only identifier...
Readonly my $ALPHA_IDENT => qr/ [A-Z] [A-Za-z]*/xms;


if ('Ident' =~ $ALPHA_IDENT) {
    print "Matched\n";
}