import Deferred

// Create a new deferred
var d = Deferred<Void>()

// Build the chain. Values are passed down and transformed based on parameter types
// The next deferreds in the chain do not require signatures, their type is inferred from the previous 
// deferred's return type
d.chain { () -> Deferred<String> in
    print(1)
    return f
}.then { s in
    print(s)
    print(2)
}.then {
    print(3) // I dont take any args, since the block above me didnt reutn a deferred
}.error { err in
    print("Error: \(err)")
}

// Fire the callback 
d.callback([])

  Alamofire.request(.GET, url).json("title") { (post: String) -> () in
      // Loaded a single post. Request the rest of the article
      return Alamofire.request(.GET, url).json("article)
  }.chain { (article: String) -> () in
    // Loaded the article. Return it as an array of words
    return article.split(' ')
  }.then { words in
    print("Have words!")
  }.error { e in
      print("Error occured: \(e)")
  }