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 Tywan Claxton
Tywan Claxton
8,397 Points

Ios Overriding initializer

I keep receiving a compiler error stating, initializer does not override a designated initializer from its superclass 

enum Condition {
    case poor
    case fair
   case excellent
}

class Shoe {

    var color: Condition
    var laces: Condition

    init(color: Condition, laces: Condition) {
        self.color = color
        self.laces = laces
    }

}

class Nike: Shoe {
var texture: Condition
var sole: Condition

 override init(color: Condition, laces: Condition, texture: Condition, sole: Condition) {
    self.texture = texture
    self.sole = sole
    super.init(color: color, laces: laces, texture: texture, sole: sole)
 }
}

1 Answer

James Mulholland
seal-mask
.a{fill-rule:evenodd;}techdegree
James Mulholland
Full Stack JavaScript Techdegree Student 20,944 Points
James Mulholland
.a{fill-rule:evenodd;}techdegree
James Mulholland
Full Stack JavaScript Techdegree Student 20,944 Points

I think I've worked out what's going on here.

Essentially, what I think is happening is that the override keyword is not needed as the init method in the subclass (Nike) is a different init() method to the one in the superclass (Shoe) as they take different parameters. Therefore, you need to get rid of the override in the Nike class.

There's a second problem too. When you call super.init() you're calling the init() method from Shoe. This init() method doesn't have the texture or sole parameters so you need to get rid of those. They'll be assigned fine by self.texture and self.sole = sole.

Tywan Claxton
Tywan Claxton
8,397 Points

Thank you so much