Error on "keys.array" when migrating from Swift 1.2 to Swift 2

Question

Here is my code which was working on Swift 1.2, but doesn't work on Swift 2 :

var dictThemesNamesObjekts = [String:[Int:Int]]()
self.objekts = dictThemesNamesObjekts
let keysArray: Array = self.objekts.keys.array

On the third line, Xcode displays an this error: "array is unvailable, please construct an array from your lazy sequence".

Do you have an idea how to correct this error?

Answer 1

var aDictionary = [String : [Int : Int]]()
let array = Array(aDictionary.keys)

or, in my opinion, nicer:

let array = [String](aDictionary.keys)