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! While you're at it, check out some resources Treehouse students have shared here.

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

Posted by mattcleary2
mattcleary2
19,953 Points

My car is not flashing up with an error... still not passing?

Hey guys, confusing matter here,

I initially tried putting:

class car: Vehicle{
    var numberOfSeats: Int 

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

    }

}

let someCar = car(withDoors: 4, andWheels: 4)

But that didn't pass and the error flagged up as: Property 'numberOfSeats' not initialized at super.init call.

I don't know what was wrong with that.

BUT when I pass the following code. I get no errors.... but the task won't pass?

Any ideas?

Thanks!

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)

    }

}

let someCar = car(withDoors: 4, andWheels: 4)

1 Answer

Michael Jones
seal-mask
PLUS
.a{fill-rule:evenodd;}techdegree seal-36
Michael Jones
Python Development Techdegree Graduate 38,554 Points
Michael Jones
.a{fill-rule:evenodd;}techdegree seal-36
Michael Jones
Python Development Techdegree Graduate 38,554 Points

I used this and it worked - 

class Car: Vehicle {
    let numberOfSeats: Int = 4

    override init(withDoors doors: Int, andWheels wheels: Int){
        super.init(withDoors: doors, andWheels: wheels)
    }
}

let someCar = Car(withDoors: 4, andWheels: 4)

Hope this helps.

Happy Coding!!

Michael J