ch06.010_best

来自「Perl Best Practices the source code」· 010_BEST 代码 · 共 24 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 @generated_lines = (undef, "a line\n", undef, "another line\n");


for my $line (grep {defined $_} @generated_lines) {
    print $line;
}