ch19.035_best

来自「Perl Best Practices the source code」· 035_BEST 代码 · 共 32 行

##############################################################################
##   Code fragment (Recommended) from Chapter 19 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 lc_digest {
    my ($text) = @_;
 
    use Digest::SHA qw( sha512 );
    return sha512(lc $text);
}
 
use Memoize;
memoize( 'lc_digest' );


for my $text ( ('foo was here' x 1_000_000) x 100 ) {
    print lc_digest($text), "\n";
}