ch06.072_best

来自「Perl Best Practices the source code」· 072_BEST 代码 · 共 35 行

##############################################################################
##   Code fragment (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 @pm_files = qw(
    Eat.pm
    At.pm
    Joes.pm
);

my @pm_files_without_pl_files 
    = grep { 
          my $file = $_; 
          $file =~ s/.pm\z/.pl/xms;
          !-e $file; 
      } @pm_files;



use Data::Dumper 'Dumper';
warn Dumper [ @pm_files_without_pl_files ];
warn Dumper [ @pm_files ];