How do I use the bitwise operator XOR in Lua?

Question

How can I implement bitwise operators in Lua language?
Specifically, I need a XOR operator/method.

Answer 1

This is very simple. use NAND logic. https://en.wikipedia.org/wiki/NAND_logic

function xor(a,b)
    return not( not( a and not( a and b ) ) and not( b and not( a and b ) ) )
end

if you also need 1,0 inputs insert the following to the function

    a = a==1 or a == true   -- to accept nil, 1, 0, true or false
    b = b==1 or b == true   -- to accept nil, 1, 0, true or false

Hope this helps someone.