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

Brandon Lenz
Brandon Lenz
7,937 Points
Posted by Brandon Lenz
Brandon Lenz
7,937 Points

Optionals issue

See code challenge.

The following code yields no compiler errors in the preview window, yet I still receive the "Bummer" message for compiler errors.

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

    init?(dictionary: [String : String]) {
        guard let title = dictionary["title"], let author = dictionary["author"] else {
            return nil
        }
        self.title = title
        self.author = author
        self.price = dictionary["price"]
        self.pubDate = dictionary["pubDate"]
    }
}

1 Answer