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iOS Object-Oriented Swift Properties Getter and Setter Methods

Frank Bloemendal
Frank Bloemendal
7,326 Points
Posted by Frank Bloemendal
Frank Bloemendal
7,326 Points

The system keeps telling me I am returning an incorrect value in my setter method. Please help me to spot the error

The system keeps telling me the returned value is incorrect and prompts this suggested value: Celsius = (Fahrenheit-32)/1.8) Clearly I am mistaken, but yet I can't seem to spot the error I make.

My setter method returns: set { celsius = ( fahrenheit - 32 ) / 1.8 } which I think is the same as the suggested returned formula. Apart from capital letters, which are not the problem there are extra braces in the suggestion. I tested that and it wasn't the problem either. It would be of great help if you guys could point out my error. Thank you in advance

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 }
    }    
}

2 Answers

Zack Richard
Zack Richard
6,313 Points

Hi Frank,

The problem is that you need to remove fahrenheit in your setter method and replace it with newValue:

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