如何使用Swift迭代Realm中的结果

查询的结果var有效并包含两个PersonClass对象,但在迭代结果时,name属性为空字符串.

class PersonClass: Object {
    var name = ""
}

let realm = try! Realm()

@IBAction func button0Action(sender: AnyObject) {
  let results = realm.objects(PersonClass)

  print(results) //prints two PersonClass object with the name property populated

  for person in results {  
      let name = person.name
      print(name) //prints and empty string   
  }
}