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iOS Object-Oriented Swift 2.0 Class Inheritance Overriding Methods

Posted by arun mathew
arun mathew
825 Points

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

classes.swift 
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")

//someDoctor.getFullName()
// Enter your code below

1 Answer

David Lacedonia
David Lacedonia
13,627 Points
David Lacedonia
David Lacedonia
13,627 Points

You just forgot the "dot"

Is not: 

return "Dr \(lastName)"

Is:

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)