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iOS Object-Oriented Swift Properties Getter and Setter Methods

Greg Jones
Greg Jones
2,417 Points
Posted by Greg Jones
Greg Jones
2,417 Points

Properties - Getter/Setter - Task 3

We need to add getter and setter methods to the fahrenheit property of the Temperature class. Add a getter method to the access the value of the fahrenheit property. Then add a setter method. When the user assigns a value to the fahrenheit property, the setter method will calculate and assign a value to the celsius property. (Note: Celsius = (Fahrenheit-32)/1.8))

what am I missing?

Temperature.swift 
class Temperature {
    var celsius: Float = 0.0
    var fahrenheit: Float {
        get {
            return (celsius * 1.8) + 32.0
        }
        set {
            self.celsius = (fahrenheit - 32) / 1.8
        }
    }
    init (celsius: Float) {
        self.celsius = celsius
    }
}

var newTemp = Temperature(celsius: 40)
newTemp.fahrenheit = 70

1 Answer

kjvswift93
kjvswift93
13,515 Points

You have made it a little too complicated for yourself. It should just look like this:

class Temperature {
    var celsius: Float = 0.0
    var fahrenheit: Float {
        get {
             return (celsius * 1.8) + 32.0
         } 
         set {
              celsius = (newValue - 32) / 1.8
         }
    }    
}