Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community!

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

iOS Object-Oriented Swift 2.0 Class Inheritance Creating a Subclass

Can't pass new property into superclass init value to create an instance with the superclass

Not sure what I'm doing wrong?

class Vehicle {
    var numberOfDoors: Int
    var numberOfWheels: Int

    init(withDoors doors: Int, andWheels wheels: Int) {
        self.numberOfDoors = doors
        self.numberOfWheels = wheels

// Enter your code below
class Car: Vehicle {
    var numberOfSeats: Int = 4

    override init(withDoors doors: Int, andWheels wheels: Int) {
        super.init(withDoors: doors, andWheels: wheels, Seats: 4)
        self.numberOfSeats = seats


let someCar = Car(withDoors: doors, andWheels: wheels)

2 Answers

Close on the last statement. Not sure why you thought you had to override the superclass's initializer.

class Car: Vehicle {
    var numberOfSeats: Int = 4
let someCar = Car(withDoors: 4, andWheels: 4)

Because I was mindlessly copying what I just learned in the video. I overthought the process.

I've been there! Happy coding.