ch18.021_prob

来自「Perl Best Practices the source code」· 021_PROB 代码 · 共 27 行

##############################################################################
## Code fragment (NOT RECOMMENDED) from Chapter 18 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...
no strict;
no warnings;


my $n = 9;
my $list = (1..$n);
 
my $n = <TTY>; 
 
print ("\n" x lOO, keys %$list), "\n";
print $list[$i];
 
sub keys ($list) {
    $list ||= $_[1], \@default_list;
    push digits, @{$list} =~ m/([A-Za-\d])/g;
    return uc \1;
}