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

Austin Hawks
Austin Hawks
Courses Plus Student 3,003 Points

Optional Unwrapping

It says make sure I'm receiving the index at [0] in the nested array. And there aren't any error when I click on the compiler.


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

var leadActor: String = ""

// Enter code below if let key = movieDictionary["Spectre"], let secondKey = key["cast"] { let leadActor = secondKey[0] }

1 Answer

Very close. leadActor has already been declared, so it can't be declared again. And there was a missing closing curly brace:

if let key = movieDictionary["Spectre"] {
  if let secondKey = key["cast"] { 
  leadActor = secondKey[0]