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iOS Object-Oriented Swift Properties Getter and Setter Methods

Ye Jin
Ye Jin
3,484 Points
Posted by Ye Jin
Ye Jin
3,484 Points

I couldn't find any problem for the current code and the preview does not show any error....

I wrote the getter, setter and init functions, can not find any problem. The preview does not show anything...

class Temperature {
    var celsius: Float = 0.0
    var fahrenheit: Float {
        get {
          return fahrenheit
        }
        set {
          fahrenheit = newValue
          celsius = (fahrenheit - 32) / 1.8
        }
    }
    init(cel: Float, fah: Float){
      self.celsius = cel
      self.fahrenheit = fah
    }
}

1 Answer

Steve Hunter
Steve Hunter
57,712 Points
Steve Hunter
Steve Hunter
57,712 Points

Hi there,

I thought I'd share what was in my Playground as I think it will help you. 

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

I hope that makes sense. The init only needs one value as one drives the other. The rest of the getter & setter code flows from that concept, really.

I hope it helps.

Steve.