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iOS Object-Oriented Swift Properties Getter and Setter Methods

How should we write the calculation that assigns the correct value to the celsius property?

I am trying to complete the code challenge but I get an error explaining that my setter method does not assign the correct value to the celsius property, but in my offline Xcode the code shows no errors and my calculation matches the requirements.

Temperature.swift
class Temperature {
    var celsius: Float = 0.0
    var fahrenheit: Float {

        get {
        return (celsius * 1.8) + 32.0;
        }

        set {
          celsius = (fahrenheit - 32) / 1.8;
        }
    }    
}

1 Answer

Holger Liesegang
Holger Liesegang
50,595 Points

Hi Richard Robinson

It's a computed property and you have to use the implicitly named variable "newValue" instead of "fahrenheit"

You might want to have a look at Computed Properties

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

...also semicolons at the end of lines are optional