ch09.033_best

来自「Perl Best Practices the source code」· 033_BEST 代码 · 共 31 行

##############################################################################
##   Code fragment (Recommended) from Chapter 9 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 $FILLED_USAGE => 'Usage: filled($text, $cols, $filler)';

use List::MoreUtils qw( any );
 
sub filled {
    my ($text, $cols, $filler) = @_;
 
    croak $FILLED_USAGE 
        if any {!defined $_} $text, $cols, $filler;
 
    # [etc.]
}

print filled( 'text' );