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iOS Object-Oriented Swift Properties Getter and Setter Methods

Mehran Amini Tehrani
Mehran Amini Tehrani
1,523 Points
Posted by Mehran Amini Tehrani
Mehran Amini Tehrani
1,523 Points

Getter and Setter method

I get an error "Attempting to modify "fahrenheit" within its own setter ". Why? And how should I solve it?

Thanks

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

3 Answers

Steve Hunter
Steve Hunter
57,712 Points

Hi there,

Have a look through this code and see if that makes sense to you:

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

I hope that helps!

Steve.

Mark Turney
Mark Turney
1,654 Points
Mark Turney
Mark Turney
1,654 Points

I was stuck on this one too. Thanks Steve!

Steve Hunter
Steve Hunter
57,712 Points

No problem! :-)