Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

iOS Swift 2.0 Enumerations and Optionals Introduction to Optionals Initializing Optional Values

MINJI KIM
MINJI KIM
1,905 Points
Posted by MINJI KIM
MINJI KIM
1,905 Points

don't understand the question :(

help me finding the answer for this task!

optionals.swift 
struct Book {
    let title: String
    let author: String
    let price: String?
    let pubDate: String?

    init? (dict: Book)
}

2 Answers

Vukasin Pavlovic
Vukasin Pavlovic
8,108 Points
Vukasin Pavlovic
Vukasin Pavlovic
8,108 Points

struct Book {

let title: String
let author: String
let price: String?
let pubDate: String?
init?(dict: [String: String]){

    guard let title = dict["title"], author = dict["author"] else {
        return nil
    }
self.title = title
self.author = author
self.price = dict["price"]
self.pubDate = dict["pubDate"]

} }

Vukasin Pavlovic
Vukasin Pavlovic
8,108 Points
Vukasin Pavlovic
Vukasin Pavlovic
8,108 Points

And have no ide why these two brackets are not in code! :) This is the correct code! Enjoy :)