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

Posted by Victor O'Rourke
Victor O'Rourke
2,387 Points

Need to tie it up

I dont know how to assign the value i have got in this if let to the var above

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

var leadActor: String = ""

// Enter code below
if let movie = movieDictionary["Spectre"], let actors = movie["cast"] {
    print(actors[0])
}

1 Answer

Matthew Long
Matthew Long
28,407 Points
Matthew Long
Matthew Long
28,407 Points

You did the hard part! Now all you have to do us use subscript to access the actor at index position 0 and assign it to the leadActor variable.

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

var leadActor: String = ""

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

A challenge here on Treehouse won't normally ask you to print something to the console. So be sure to reread the directions after you feel like you have the correct solution in Xcode.

Victor O'Rourke
Victor O'Rourke
2,387 Points

haha, can't believe i miss that... i was looking to connect it above using the var instance. Thanks!!