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

Martel Storm
Martel Storm
4,157 Points
Posted by Martel Storm
Martel Storm
4,157 Points

Nil Values in Optionals. Stuck Code Challenge.

What am I missing here?

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 var leadActor = movieDictionary["Spectre"], let person = leadActor["cast"] {
  leadActor = person[0]
}

1 Answer

andren
andren
28,558 Points
andren
andren
28,558 Points

The problem comes from the fact that you use the name leadActor for your unwrapping. By doing that you create a new array variable named leadActor within the scope of that if code block, that while named the same does not actually equal the leadActor variable outside the if block.

If you choose a different name like this:

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

Then your code will work fine.