int-is-anyobject.swift

func passAnyObject(param: AnyObject) {
    print(param)
}

class MyClass {}

struct MyStruct {}

let a: Int = 1
let b = 2.0
let c = NSObject()
let d = MyClass()
let e = MyStruct()

passAnyObject(a)
passAnyObject(b)
passAnyObject(c)
passAnyObject(d)
//passAnyObject(e) // Argument type 'MyStruct' does not conform to expected type 'AnyObject'


if a is AnyObject {
    print("\(a.dynamicType) is AnyObject")
}