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iOS Object-Oriented Swift Properties Getter and Setter Methods

Bruno Fernandes
Bruno Fernandes
2,413 Points
Posted by Bruno Fernandes
Bruno Fernandes
2,413 Points

Why doesn't this work?

I get an error "cannot invoke '-' with an argument list of type '(($T5), FloatLiteralConvertible)'" but I don't understand why.

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

1 Answer

kjvswift93
kjvswift93
13,515 Points

It should 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
         }
    }    
}
Bruno Fernandes
Bruno Fernandes
2,413 Points
Bruno Fernandes
Bruno Fernandes
2,413 Points

Thanks, Kyle. The error message really threw me off.