Larry Wall wrote: > $a .! $b # bitwise xor > $a ! $b # logical xor > ! $b # logical not > > I like the notion that binary ! means that the two sides are sharing > one "not". That's the definition of XOR in a nutshell.
I like that too. It also means that C<!!> and C<.!!> become the equivalence operators for free. (Technically inverting the right operand then doing xor, but that's ... um, equivalent.) However it means that the binary ops become: $a || $b # logical or $a .| $b # bitwise or $a && $b # logical and $a .& $b # bitwise and $a ! $b # logical xor $a .! $b # bitwise xor That makes logical xor look a little inconsistent (it doesn't line up for a start). Doubling the exclamation mark would make logical xor fit in better (though that'd leave three of them in equivalence). > I also like the idea that ~ is entirely freed up for some other > nefarious use. Yeah; how'd that happen? Seems like not too long ago we were short of punctuation symbols, and now you've got a spare one lying around. Smylers
