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iOS Enumerations and Optionals in Swift Introduction to Optionals Nil Values in Collections

if let statement

I have the correct answer, I just followed the pattern in the example, but what do I do with it? What happens next?

let movieDictionary = ["Spectre": ["cast": ["Daniel Craig", "Christoph Waltz", "Léa Seydoux", "Ralph Fiennes", "Monica Bellucci", "Naomie Harris"]]]

var leadActor: String = ""

if let movie = movieDictionary["Spectre"] {
    if let movieCast = movie["cast"] {
       leadActor = movieCast[0]

1 Answer

Everton Carneiro
Everton Carneiro
15,994 Points

If your questions is where you are gonna use this in real world projects, mainly to get data from the web through a JSON file. Since the data from the web may or may not receive data, you have to check if the data is available.