in reply to compare two strings and return only he unique values.
You can also use List::Compare
my ($str1, $str2) = ("ABCDE", "BCDEO");
my @list1 = split //, $str1;
my @list2 = split //, $str2;
my @unique = List::Compare->new(\@list1, \@list2)
say "Unique letters: @unique";
There is no Extraterrestrial life
There aren't any suitably capable Extraterrestrials
Interstellar travel is too difficult
We're too uncool / not worth the trouble
What do you mean they haven't visited?
Results (488 votes). Check out past polls.