Any AnyObject是两种不确定类型
- AnyObject标识任何类类型的实例
- Any可以用来表示任何类型，包括类、函数、基本数据类型等
class Person{
var name:String
init (name:String){
self.name = name
}
}
class Teacher:Person{
var school:String
init (name:String, school:String){
self.school = school
super.init(name: name)
}
}
class Stutent:Person{
var age:Int
init (age:Int, name:String){
self.age = age
super.init(name: name)
}
}
let tea = Teacher(name:"老师", school:"北工大")
let stu = Stutent(age:23, name:"学生")
let array1:[AnyObject] = [tea, stu];
let array2:[Any] = [tea, stu];
let array3:[Any] = [tea, stu, "helloWorld"];
在实际工作中 AnyObject 经常用于字典和数组
看起来Any能代替AnyObject。
