On Nov 22, Pinar 2 said:
>> >syntax error at ./shopdiff.pl line 5, near "++ for "
>> >Execution of ./shopdiff.pl aborted due to compilation errors.
>>
>> You're using an older version of Perl. Do:
If you're using 5.005_03, then the postfix-for should work. Perhaps your
PROGRAM is using an older version of Perl that you still have hanging
around somewhere?
>Thanks that worked. It didn't give me differences though, it gave me the
>common list items. Perhaps the unique to sub will give the differences but
>I can't get that one working either.
If you have arrays with UNIQUE elements, then the following code returns
the elements in one but not both:
sub diff {
my %seen;
for (@_) {
for (@$_) {
$seen{$_}++
}
}
return grep $seen{$_} == 1, keys %seen
}
--
Jeff "japhy" Pinyan [EMAIL PROTECTED] http://www.pobox.com/~japhy/
RPI Acacia brother #734 http://www.perlmonks.org/ http://www.cpan.org/
** Look for "Regular Expressions in Perl" published by Manning, in 2002 **
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