Bitwise Xor

a!localVariables(
  local!input1: if(
    len(ri!input2) > len(ri!input1),
    concat(
      a!forEach(
        items: enumerate(len(ri!input2) - len(ri!input1)),
        expression: 0
      ),
      ri!input1
    ),
    ri!input1
  ),
  local!input2: if(
    len(ri!input1) > len(ri!input2),
    concat(
      a!forEach(
        items: enumerate(len(ri!input1) - len(ri!input2)),
        expression: 0
      ),
      ri!input2
    ),
    ri!input2
  ),
  concat(
    a!forEach(
      items: enumerate(len(local!input1)),
      expression: if(
        local!input1[fv!index] =local!input2[fv!index],
        0,
        1
      )
    )
  )
)