需要澄清Swift中的任何对象吗

在开始之前，我已经阅读了Swift文档。我仍在试图理解任何对象实际上是什么。它是否是Swift中所有对象/类的基类，如目标C中的NSObject

如果我创建一个[AnyObject]类型的数组，并用Movie类实例填充它，这意味着AnyObject是Movie类的基类，对吗

let someObjects: [AnyObject] = [
    Movie(name: "2001: A Space Odyssey", director: "Stanley Kubrick"),
    Movie(name: "Moon", director: "Duncan Jones"),
    Movie(name: "Alien", director: "Ridley Scott")
]

这应该是真的，否则您将无法使用类型转换操作符（as！）进行向下转换，对吗

Swift文件规定：

任何对象都可以表示任何类类型的实例

那么…从任何对象都是基类实例的角度来表示它

---

我是Swift新手，请耐心点：）

任何对象都是协议。如果在操场中键入并单击命令，将弹出以下窗口：

/// The protocol to which all classes implicitly conform.
///
/// When used as a concrete type, all known `@objc` methods and
/// properties are available, as implicitly-unwrapped-optional methods
/// and properties respectively, on each instance of `AnyObject`.  For
/// example:
///
/// .. parsed-literal:
///
///   class C {
///     @objc func getCValue() -> Int { return 42 }
///   }
///
///   // If x has a method @objc getValue()->Int, call it and
///   // return the result.  Otherwise, return nil.
///   func getCValue1(x: AnyObject) -> Int? {
///     if let f: ()->Int = **x.getCValue** {
///       return f()
///     }
///     return nil
///   }
///
///   // A more idiomatic implementation using "optional chaining"
///   func getCValue2(x: AnyObject) -> Int? {
///     return **x.getCValue?()**
///   }
///
///   // An implementation that assumes the required method is present
///   func getCValue3(x: AnyObject) -> **Int** {
///     return **x.getCValue()** // x.getCValue is implicitly unwrapped.
///   }
///
/// See also: `AnyClass`
@objc protocol AnyObject {
}

@瓦卡瓦马已经对任何物体都是什么给出了一个很好的答案。（投票）它是所有类类型对象的协议。在swift中，协议是一种类型，因此AnyObject表示“符合此协议的任何对象”。我想提一下它不是什么。它不是基类。与Objective-C等其他OO语言不同，Swift并没有为所有对象提供公共基类。相反，所有类对象都符合AnyObject协议。@Duncac那么你是说所有类对象自动符合AnyObject协议？是的，所有类对象都符合AnyObject协议。因此，所有实例都可以分配给AnyObject变量，所有类实例都可以放置在
[AnyObject]
数组中。您不能扩展
AnyObject
协议，因此在这方面，它的行为不像基类。@vacawama-Ahh。非常感谢。这就解释了一切！我希望他们能在文件中说明这一点。：）
/// The protocol to which all classes implicitly conform.
///
/// When used as a concrete type, all known `@objc` methods and
/// properties are available, as implicitly-unwrapped-optional methods
/// and properties respectively, on each instance of `AnyObject`.  For
/// example:
///
/// .. parsed-literal:
///
///   class C {
///     @objc func getCValue() -> Int { return 42 }
///   }
///
///   // If x has a method @objc getValue()->Int, call it and
///   // return the result.  Otherwise, return nil.
///   func getCValue1(x: AnyObject) -> Int? {
///     if let f: ()->Int = **x.getCValue** {
///       return f()
///     }
///     return nil
///   }
///
///   // A more idiomatic implementation using "optional chaining"
///   func getCValue2(x: AnyObject) -> Int? {
///     return **x.getCValue?()**
///   }
///
///   // An implementation that assumes the required method is present
///   func getCValue3(x: AnyObject) -> **Int** {
///     return **x.getCValue()** // x.getCValue is implicitly unwrapped.
///   }
///
/// See also: `AnyClass`
@objc protocol AnyObject {
}