ch10.019_best

来自「Perl Best Practices the source code」· 019_BEST 代码 · 共 30 行

##############################################################################
##   Code fragment (Recommended) from Chapter 10 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 @results = (1..10);

SAVE: 
while (my $save_file = prompt 'Save to which file? ') {
    # Open specified file and save results...
    open my $out, '>', $save_file  or next SAVE;
    print {$out} @results          or next SAVE;
    close $out                     or next SAVE;
 
    # Save succeeded, so we're done...
    last SAVE;
}