/**
* This method returns whether only one operand is "true".
*
* @access public
* @static
* @param IBool\Type $x the left operand
* @param IBool\Type $y the right operand
* @return IBool\Type whether only one operand is "true"
*
* @see http://en.wikipedia.org/wiki/Truth_table#Exclusive_disjunction
*/
public static function xor_(IBool\Type $x, IBool\Type $y) : IBool\Type
{
return IBool\Type::box($x->unbox() xor $y->unbox());
}
