"Build a REST API With Express" was retired on August 10, 2021. You are now viewing the recommended replacement.

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

Posted by Joe Dardis
Joe Dardis
1,266 Points

subclass help

My error syas I am missing argument for parameter "andWheels" in call. Not sure why.

class Vehicle { var numberOfDoors: Int var numberOfWheels: Int

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

}

class Car: Vehicle { var numberOfSeats: Int

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


}

}

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

1 Answer

Maciej Wilczyński
Maciej Wilczyński
5,062 Points

super.init should look:

super.init(withDoors: numberOfDoors, andWheels: numberOfWheels)

You must pass to super.init() values from subclass init