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iOS Object-Oriented Swift 2.0 Complex Data Structures Adding Instance Methods

Jason Zheng
Jason Zheng
7,943 Points

Why can't my code work?

structs.swift
struct Person {
    let firstName: String
    let lastName: String
    func getFullName() -> (String) {
       let fullName = firstName + " " + lastName
       return fullName
    }
}

let aPerson = Person(firstName: "Jason", lastName: "Zheng")
let fullName = aPerson.getFullName()

I think because your function does not know about let firstName and let lastName you should hand them as parameters

func getFullName(String: firstName, String: lastName)

something like that

Paul Brazell
Paul Brazell
14,371 Points

Chris, that would be the case if you were doing external parameters. Since the function is defined inside the body of the struct, it has access to all of its properties.

2 Answers

Paul Brazell
Paul Brazell
14,371 Points

Take away the parenthesis in the return type of the getFullName method. This worked for me.

struct Person {
    let firstName: String
    let lastName: String
    func getFullName() -> String {
       let fullName = firstName + " " + lastName
       return fullName
    }
}

let aPerson = Person(firstName: "Jason", lastName: "Zheng")
let fullName = aPerson.getFullName()

Ah I see Paul, my mistake. Good oppertunity to learn for me as well :)