Coalescing in swift

import Foundation

func coalesce<T>(args: T?...) -> T? {
  for possible in args {
    if let actual = possible {
      return actual
    }
  }
  return nil
}

var optional1 : Int?
var optional2 : Int?
var optional3 : Int?

optional2 = 1
if let valid = coalesce(optional1,optional2,optional3) {
  println(valid)
}