swift - How do I create an array of tuples?

Question

I'm trying to create an array of tuples in Swift, but having great difficulty:

var fun: (num1: Int, num2: Int)[] = (num1: Int, num2: Int)[]()

The above causes a compiler error.

Why's that wrong? The following works correctly:

var foo: Int[] = Int[]()

Answer 1

It works with a type alias:

typealias mytuple = (num1: Int, num2: Int)

var fun: mytuple[] = mytuple[]()
// Or just: var fun = mytuple[]()
fun.append((1,2))
fun.append((3,4))

println(fun)
// [(1, 2), (3, 4)]

Update: As of Xcode 6 Beta 3, the array syntax has changed:

var fun: [mytuple] = [mytuple]()
// Or just: var fun = [mytuple]()