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

Ryan Clark
Ryan Clark
2,832 Points
Posted by Ryan Clark
Ryan Clark
2,832 Points

Can someone explain what I've got wrong?

Not quite sure what I'm missing?

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

1 Answer

David Papandrew
David Papandrew
8,386 Points
David Papandrew
David Papandrew
8,386 Points

The only thing you need to change is the init parameters data type. It should be String:String not String:String?

Here's is the corrected line:

init?(dict: [String: String]) {