Stupid overloading tricks

extension String {
    func split(separator:String) -> [String] {
        return self.componentsSeparatedByString(separator)
    }
}
 
extension Array {
    func unpack() -> (T)? {
        return count == 1 ? (self[0]) : nil
    }
    
    func unpack() -> (T, T)? {
        return count == 2 ? (self[0], self[1]) : nil
    }

    func unpack() -> (T, T, T)? {
        return count == 3 ? (self[0], self[1], self[2]) : nil
    }

    func unpack() -> (T, T, T, T)? {
        return count == 4 ? (self[0], self[1], self[2], self[3]) : nil
    }

    func unpack() -> (T, T, T, T, T)? {
        return count == 5 ? (self[0], self[1], self[2], self[3], self[4]) : nil
    }

    func unpack() -> (T, T, T, T, T, T)? {
        return count == 6 ? (self[0], self[1], self[2], self[3], self[4], self[5]) : nil
    }
    
    func unpack() -> (T, T, T, T, T, T, T)? {
        return count == 7 ? (self[0], self[1], self[2], self[3], self[4], self[5], self[6]) : nil
    }
    
    func unpack() -> (T, T, T, T, T, T, T, T)? {
        return count == 8 ? (self[0], self[1], self[2], self[3], self[4], self[5], self[6], self[7]) : nil
    }
    
    func unpack() -> (T, T, T, T, T, T, T, T, T)? {
        return count == 9 ? (self[0], self[1], self[2], self[3], self[4], self[5], self[6], self[7], self[8]) : nil
    }
    
    func unpack() -> (T, T, T, T, T, T, T, T, T, T)? {
        return count == 10 ? (self[0], self[1], self[2], self[3], self[4], self[5], self[6], self[7], self[8], self[9]) : nil
    }
}
 
if let (hello, world) = "Hello, world".split(", ").unpack() {
    println(hello)
    println(world)
}
 
if let (hello, world) = "Hello, world, omg".split(", ").unpack() {
    println(hello)
    println(world)
}
 
if let (first, last, birthday) = "Bob, Quone, January 1st 1987".split(", ").unpack() {
    println(first)
    println(last)
    println(birthday)
}