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iOS Object-Oriented Swift Properties Getter and Setter Methods

Michael Lee
Michael Lee
2,855 Points

Code not working for getter and setter method code challenge

I'm quite confused as to what the question wants me to do, as I have calculated the value of celsius in the setter method and returned the value of fahrenheit in the getter method, yet I'm still getting an error

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

1 Answer

Chris Shaw
Chris Shaw
26,662 Points

Hi Michael,

As Pasan showed in the previous video you can use the special variable newValue to access the new value assigned to fahrenheit.

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

Happy coding!

Michael Lee
Michael Lee
2,855 Points

Thanks, but the code still doesn't work even after changing it to the variable newValue. I think there's something wrong with my getter method.

Here's the question, by the way:

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))

Chris Shaw
Chris Shaw
26,662 Points

Hi Michael,

Sorry for the delay, I was on the train when I responded and missed how you had your getter code which doesn't need to change from what the challenge originally has, I've updated my original post to reflect this.