ch09.035_best

来自「Perl Best Practices the source code」· 035_BEST 代码 · 共 30 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)';

sub filled {
    croak $FILLED_USAGE if @_ < 1 || @_ > 2;
 
    my ($text, $opt_ref) = @_;   # cols and fill char now passed as options
 
    return $text;
}

print filled( 'text' );
print filled( 'text', { filler=>q{,} } );
print filled( 'text', { filler=>q{,} }, 'centred' );