Difference between ANY and ANYOBJECT ?

In Swift, Any and AnyObject are two types used for representing a value of any type, but with different constraints.

Any is a type that represents any value, including functions, structures, classes, and enums. For example:

let value: Any = 42

In this example, value is of type Any and can hold any value, including an integer, a string, a class instance, etc.

AnyObject is a type that represents any instance of a class. For example:

let object: AnyObject = NSString(string: "Hello, world")

In this example, object is of type AnyObject and can only hold instances of a class type. It cannot hold a value of a struct, enum, or function type.

The main difference between Any and AnyObject is the type of value they can represent. Any can represent any value, including value types and function types, while AnyObject can only represent instances of a class type. This allows for more type safety when using AnyObject, as you can be sure that the value you are working with is an instance of a class.