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

Posted by Brydon Johnson
Brydon Johnson
1,417 Points

Swift optional unwrapping

Initializer for conditional binding must have Optional type, not 'String'

this is the error I keep getting.

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 cast = movie["cast"]{
    var leadActor = cast[0]
}

1 Answer

Trevor Duersch
Trevor Duersch
9,964 Points

Drop the "var" in your var leadActor = cast[0] because you've already declared a variable of "leadActor" from line 3. Everything else should work because it worked for me. Happy coding!