Optional Binding

import Cocoa

var myString:String?
var myint:Int?

myString = "Hello, Swift!"

if let yourString = myString {
   println("Your string has - \(yourString)")
}else{
   println("Your string does not have a value")
}

if let yourInt = myint {
   println("Your int has - \(yourInt)")
}else{
   println("Your yourInt does not have a value")
}