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Start your free trialAnatolii Tcai
2,401 PointsDo not really understand the task. So I create a failable initializer using init?, but how to retrieve the values?
The task is to create a failable initializer using a dictionary of type [String : String] as input. It also should initialize all the stored properties. So how do I do that?
struct Book {
let title: String
let author: String
let price: String?
let pubDate: String?
init?(dict: [String : String]) {
return nil
}
}
Anthony Lafont
17,075 PointsAnthony Lafont
17,075 PointsHi Anatoli, that's a tough one ;) The purpose of an initializer is to initiate all stored properties, in your response, nothing is initialized, that's why it doesn't work. To initialize them, you have to be sure that a least the two first properties exist, otherwise the initializer should return nil (as it's failable). The best way is to use a guard let statement. Here is how I've done:
Hope that helps!