while-without-while.swift

func _while_without_while(condition: @autoclosure () -> BooleanType, 
                          action: () -> ()) {
                          
  var loop: () -> () = { $0 }
  loop = {
    // The condition is called each time to 
    // see if the loop should continue
    if condition() {
      // Then the acutal action is called
      action()
      
      // Lastly the closure calls itself recursively
      loop()
    }
  }
  
  // This sets off the first loop iteration
  loop()
}

var j = 0

_while_without_while(j < 10) {
  println("\(j)")
  j += 1
}