gistfile1.txt

// Kotlin
var bob : User? = null
...
fun printBob() {
  someOutput(bob?.name)
  someOutput(bob?.surname)
  if(bob?.age == 5) { // does this even work? I need to null check separately, right?
    doSomeMoreStuff(bob?.dateOfBirth)
  }
}
// Or maybe I should use !! ?
fun printBob() {
  someOutput(bob!!.name)
  someOutput(bob!!.surname)
  if(bob!!.age == 5) { 
    doSomeMoreStuff(bob!!.dateOfBirth)
  }
}


//Swift
var bob : User? = null
func printBob() {
  if let notNullBob = bob {
    someOutput(notNullBob.name)
    someOutput(notNullBob.surname)
   if(notNullBob.age == 5) { 
      doSomeMoreStuff(notNullBob.dateOfBirth)
   }
  }
}