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iOS Object-Oriented Swift Properties Getter and Setter Methods

Posted by Jonas Kristensen
Jonas Kristensen
2,738 Points

Add get & set

We need to add getter and setter methods to the fahrenheit property of the Temperature class. Add a getter method to the access the value of the fahrenheit property. Then add a setter method. When the user assigns a value to the fahrenheit property, the setter method will calculate and assign a value to the celsius property. (Note: Celsius = (Fahrenheit-32)/1.8)). Who can help me?

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

Mat Sanders
Mat Sanders
4,819 Points
Mat Sanders
Mat Sanders
4,819 Points

A get method gets the value of the variable (fahrenheit). A setter will set that value you passed it. It's asking for you to make a setter and a getter. But in the setter to set both the fahrenhrit and celsius variable.

Here is a rough draft of what they want.

 var fahrenheit: Float {
    get {
        return fahrenheit
        }
        set {
        fahrenheit = newValue
        celsius = (fahrenheit - 32) / 1.8
    }
Jonas Kristensen
Jonas Kristensen
2,738 Points

Can you make it in Swift?

Mat Sanders
Mat Sanders
4,819 Points

Sorry I went to Java in my head it's my main language. I have updated the answer with a rough layout.

Jonas Kristensen
Jonas Kristensen
2,738 Points 
class Temperature {
    var celsius: Float = 0.0
    var fahrenheit: Float {
    get {
        return fahrenheit
        }
        set {
        fahrenheit = newValue
        celsius = (fahrenheit - 32) / 1.8
        }

    }    
}
Jonas Kristensen
Jonas Kristensen
2,738 Points

Still wont work???

Mohammed Abushamala
Mohammed Abushamala
3,650 Points
Mohammed Abushamala
Mohammed Abushamala
3,650 Points

it still didn't work

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