gistfile1.swift

let users = ["klausa_qwpx", "macoscope"]

func getTweetsForUser(userName: String, completion: AnyObject? -> Void) {
    let parameters: [String:AnyObject] = ["screen_name": userName, "include_rts": true,
                                          "count": 5, "include_entities": true]

    Alamofire.request(.GET,  "https//api.twitter.com/1/statuses/user_timeline.json", parameters: parameters)
        .responseJSON { (_, _, json, _) in
            if let json = json {
                completion(json)
            }
    }
}

var closure: (AnyObject?) -> () = {
    if let tweets = $0 as? [[String:String]] {
        tweets.map { (tweet: [String:String]) -> () in
            let text = tweet["text"]
            println("tweet: \(text)")
        }
    }
}

for user in users {
    getTweetsForUser(user, closure)
}

//  works

users.map { getTweetsForUser($0, closure) }

// won't compile: Cannot reference a local function from another local function
// bug or Working As Intended?