>> ($a ^ $b) =~ /^(\0*)/ && length $1 > >Whether they give the same value depends on the values of $a and $b. Try >it with $a = 'abcdef' and $b = 'abCdef', for example.
To work with any $a and $b, you should play it safe and say: "$a"^"$b". Otherwise the used-in-numeric-context gremlins will eat your code.
