How do you cast a UInt64 to an Int64?

Question

Trying to call dispatch_time in Swift is doing my head in, here\'s why:

 dispatch_after(dispatch_time(DISPATCH_TIME_NOW, 10 * NSEC_PER_SEC), dispatch_get_mai         


        

Answer 1

Try this:

let x:UInt64 = 1000 // 1,000
let m:Int64 = 10 * Int64(x) // 10,000

or even :

let x:UInt64 = 1000 // 1,000
let m = 10 * Int64(x) // 10,000
let n = Int64(10 * x) // 10,000
let y = Int64(x) // 1,000, as Int64 (as per @Bill's question)

It's not so much casting as initialising with a separate type...