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iOS Object-Oriented Swift 2.0 Class Inheritance Overriding Methods

when I have to override the init() in an inheritance class ?

my override function is not working, some error and its not very clear for me that when I have to override the init() method in a inheritance class? plz help

class Person {
    let firstName: String
    let lastName: String

    init(firstName: String, lastName: String) {
        self.firstName = firstName
        self.lastName = lastName

    func getFullName() -> String {
        return "\(firstName) \(lastName)"

class Doctor: Person

override func getFullName () -> String
return "Dr \(lastName)"


let someDoctor = Doctor(firstName:"Sam", lastName: "Smith")

// Enter your code below

1 Answer

David Lacedonia
David Lacedonia
13,627 Points

You just forgot the "dot"

Is not:

return "Dr \(lastName)"


return "Dr. \(lastName)"

You have to override the init() method in a inheritance class when you want a different behavior in inherited classes (when you want to extend the behavior)