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iOS Object-Oriented Swift 2.0 Class Inheritance Creating a Subclass

Posted by Carl Smith
Carl Smith
8,185 Points

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

Not sure what I'm doing wrong?

classes.swift 
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

jcorum
jcorum
71,830 Points

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)
Carl Smith
Carl Smith
8,185 Points

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

jcorum
jcorum
71,830 Points
jcorum
jcorum
71,830 Points

I've been there! Happy coding.