ch08.063_best

来自「Perl Best Practices the source code」· 063_BEST 代码 · 共 32 行

##############################################################################
##   Code fragment (Recommended) from Chapter 8 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;

sub sleep_for {
    my ($duration) = @_;
    select undef, undef, undef, $duration;
    return;
}
 
# and then...
 
print "Good night!\n";

sleep_for(0.5);

print "Good morning!\n";