Swift: Curry && Uncurry

gistfile1.swift

func curry <A, B, C>  (f: (A, B) -> C) -> A -> (B -> C) {
    return { (a: A) -> (B -> C) in
        return { (b: B) -> C in
            return f(a,b)
        }
    }
}

func uncurry <A, B, C> (f: A -> B -> C) -> (A, B) -> C {
    return { (a: A, b: B) -> C in
        return f(a)(b)
    }
}