Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

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

Posted by lvwdhydynw
lvwdhydynw
6,443 Points

How to return a valid instance here?

The code itself works in Xcode by the way

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

    init?(dict: [String:String]) {
        if let title = dict["title"] {self.title = title}
        if let author = dict["author"] {self.author = author}
        if let price = dict["price"] {self.price = price}
        if let pubDate = dict["pubDate"] {self.pubDate = pubDate}
        return nil
    }


}

1 Answer

lvwdhydynw
lvwdhydynw
6,443 Points

Alright, I have finally solved this one. For anyone who will encounter the same problem in the future, this may help you (as it worked for me): http://stackoverflow.com/questions/38291808/instance-of-a-failable-init-method