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iOS Swift 2.0 Enumerations and Optionals Introduction to Optionals Nil Values in Collections

Nil Values in Collections code challenge help

Overtime i try to assign something to lead actor i get some weird error, and i tried most of the array retrieval methods, unsure of what to do.

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

var leadActor: String = ""

if let movie = movieDictionary["Spectre"], let castList = movieDictionary["cast"], let actor = movieDictionary["cast"] { leadActor = ??? }

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

var leadActor: String = ""

if let movie = movieDictionary["Spectre"], let castList = movieDictionary["cast"], let actor = movieDictionary["cast"] {
    leadActor = ???
}

1 Answer

Anonymous,

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

var leadActor: String = ""

// Enter code below

if let movie = movieDictionary["Spectre"], let castList = movie["cast"] {
    leadActor = castList[0]
}

Let me know if that works for you.

Florin