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iOS Object-Oriented Swift 2.0 Class Inheritance Overriding Methods

Posted by John Luongo
John Luongo
5,735 Points

Assuming Doctor is a subclass of superclass Person, how do I override the initializer method, and how do I call the func

Really not having fun with these code challenges. It seems like I'm watching a lot of video, but failing to translate the skills explained into the very basic code challenges at the end.

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 init(firstName: String, lastName: String) {
        super.init(firstName: "Dr", lastName: lastName)
    }
}

let someDoctor = Doctor(firstName: "Dr", lastName: "smith")

2 Answers

jcorum
jcorum
71,830 Points

OK, a few changes. First, you were to override the function, not the default initializer. Second, it was to return "Dr. " followed by lastName. Third, the first name was to be "Sam", not "Dr.".

class Doctor: Person {

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

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

Yea, it's gets confusing. I know!

John Luongo
John Luongo
5,735 Points

this portion is KILLING me :'(, do you know of any resources I can use to help me out while practicing besides the apple notation (it's a bit broad)

jcorum
jcorum
71,830 Points
jcorum
jcorum
71,830 Points

Here's one: http://www.iphonelife.com/blog/31369/swift-programming-101-inheritance-polymorphism

If you google swift override or swift override class method you'll see others.