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

Connor Crawford
Connor Crawford
6,405 Points
Posted by Connor Crawford
Connor Crawford
6,405 Points

Trying to retrieve a value from an embedded array within a dictionary through optional binding.

Here is what I have so far. 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 cast = movie["cast"], let leadActor = cast[0] { }

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

var leadActor: String = ""

// Enter code below