/** * This method evaluates whether the left operand is NOT identical to the right operand. * * @access public * @static * @param ILinkedList\Type $xs the left operand * @param Core\Type $ys the right operand * @return IBool\Type whether the left operand is NOT identical * to the right operand */ public static function ni(ILinkedList\Type $xs, Core\Type $ys) : IBool\Type { // !== return IBool\Module::not(ILinkedList\Module::id($xs, $ys)); }