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

A bit confused on how to approach this challenge

I watched the video twice but didn't really understand the concept and therefore don't know how to solve this challenge. Can anyone advice on how to do so?

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

var leadActor: String = ""

// Enter code below
if let leadActor  = movieDictionary["Spectre"], let cast = leadActor.cast("cast") {
leadActor.cast[0]
}

1 Answer

Joshua Walker
Joshua Walker
2,547 Points

Inside your "if let" you need to assign the value from the dictionary to the variable "leadActor" with "=" like I did below. Right now your code does not assign a value to anything.

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"] {
    leadActor = cast[0]
}