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iOS Object-Oriented Swift Complex Data Structures Adding Instance Methods

Matthew Ingram
PLUS
Matthew Ingram
Courses Plus Student 4,718 Points
Posted by Matthew Ingram
Matthew Ingram
Courses Plus Student 4,718 Points

I am very lost

I don't understand this at all. Why call the instance twice?

structs.swift 
struct Person 
{


    let firstName: String
    let lastName: String

    func fullName(theName name: String) -> [String]
    {
        var results = [Person]()
        let Person = ("\(firstName) \(lastName)")
        return results 

        let aPerson = Person(firstName: "Callam", lastName: "Ingram")
    }



}

let myFullName =

2 Answers

Dhanish Gajjar
Dhanish Gajjar
20,185 Points
Dhanish Gajjar
Dhanish Gajjar
20,185 Points

Hopefully this will clear things out

struct Person {
    let firstName: String
    let lastName: String

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

let aPerson = Person(firstName: "John", lastName: "Appleseed")
let myFullName = aPerson.fullName()
Matthew Ingram
Matthew Ingram
Courses Plus Student 4,718 Points
Matthew Ingram
Matthew Ingram
Courses Plus Student 4,718 Points

Whats happening on the last line of code?

let myFullName = aPerson.fullName()

Will DeBernardi
Will DeBernardi
2,763 Points
Will DeBernardi
Will DeBernardi
2,763 Points

That last line is happening because to actually utilize the method that you defined within the struct, you need to apply it to an instance, because that method doesnt actually exist out side of the struct. So when you write:

 let myFullName = aPerson.fullname()

You are actually applying the method to the parameters defined from aPerson.