From the command line: 
echo Just another Perl Hacker | perl -pe lc
16 unique Characters. Assuming (from one of your later posts, that this is your general algorithm: 
my $string = q{echo Just another Perl Hacker | perl -pe lc};

$string =~ s/\s+//g;

$string = lc $string;

my %chars;

map { $chars{$_} = '' } split //, $string;

print scalar keys %chars;
What do I win? ;-)

In reply to RE: A challenge by Anonymous Monk
in thread A challenge by athomason

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