func classFunc() -> (
    getNumber:Void -> Int,
    getString:Void -> String,
    setNumber:Int -> Void,
    setString:String -> Void,
    dateCreated: Void -> NSDate)
{
    var number = 42
    var string = "Hello World"
    var createdDate = NSDate()

    func dateCreated() -> NSDate {
        return createdDate
    }

    func getNumber() -> Int {
        return number
    }

    func getString() -> String {
        return string
    }

    func setNumber(newValue: Int) {
        number = newValue
    }

    func setString(newValue: String) {
        string = newValue
    }


    return (getNumber, getString, setNumber, setString, dateCreated)
}


let funcInstance = classFunc()   // (() -> Int, () -> String, Int -> (), String -> (), () -> NSDate)
funcInstance.setNumber(2)
funcInstance.getNumber()        // 2
funcInstance.setString("Hello")
funcInstance.getString()        // Hello
funcInstance.dateCreated()      // "Nov 28, 2015, 11:56 PM"