uberto

### Keybase proof

I hereby claim:

  * I am uberto on github.
  * I am ramtop (https://keybase.io/ramtop) on keybase.
  * I have a public key ASCOtE1ezv_CxcrGjuvY-_rrNCzrddbsNzrwPPFho6dORQo

To claim this, I am signing this object:

uberto

class Foo: NSObject{ func foo() -> String{return "foo"}}

class Bar {func bar() -> String{return "bar"}}


let b: AnyObject = Bar()
//fail b.bar()

let f: AnyObject = Foo()
f.foo()  //it works!