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iOS

Posted by markhunter4
markhunter4
5,564 Points

I'm getting multiple errors for the code in the "Getter and Setter methods" video?!

Here's my code which matches that in the video. What's am I doing wrong???? 

class Product {
    let title: String
    var price: Double = 0.0

    init(title: String, price: Double) {
        self.title = title
        self.price = price
    }

    func discountedPrice(percentage: Double) -> Double {
        return price - (price * percentage / 100)
    }
}

class Furniture: Product {
    var height: Double
    var width: Double
    var length: Double
    var surfaceArea: Double  {
        get {
            return length * width
        }
        set {
            length = sqrt(newValue)
            width = sqrt(newValue)
        }


    init (title: String,
        price: Double,
        height: Double,
        width: Double,
        length: Double) {
            self.height = height
            self.width = width
            self.length = length
            super.init(title: title, price: price)
    }
}

let table = Furniture(title: "C Table", price: 300, height: 5, width: 5, length: 10)

table.surfaceArea = 144
table.width

1 Answer

kjvswift93
kjvswift93
13,515 Points

You need to import UIKit into your playground file for this code to be error free. Then it should match:

import UIKit

class Product {
    let title: String
    var price: Double = 0.0

    init(title: String, price: Double) {
        self.title = title
        self.price = price
    }

    func discountedPrice(percentage: Double) -> Double {
        return price - (price * percentage / 100)
    }
}

class Furniture: Product {
    var height: Double
    var width: Double
    var length: Double
    var surfaceArea: Double {
        get {
            return length * width
        }
        set {
            length = sqrt(newValue)
            width = sqrt(newValue)
        }
    }
    init (title: String, price: Double, height: Double, width: Double, length: Double) {
        self.height = height
        self.width = width
        self.length = length
        super.init(title: title, price: price)
    }
}
let table = Furniture(title: "Coffee Table", price: 300, height: 5, width: 10, length: 10)
table.surfaceArea = 144
table.width
table.length
table.surfaceArea
markhunter4
markhunter4
5,564 Points

It wasn't the UIKit (I just forgot to copy and paste that over). I forgot a '}' after the setter. Your code help me figure it out so thanks!