Pure swift implementation of comparing types

protocol Decoratable{}
class A:Decoratable{}
class B:Decoratable{}
let object:AnyObject = A()
object.dynamicType is A.Type//true
object.dynamicType is B.Type//false
object.dynamicType is Decoratable.Type//true

NOTE: Notice that it also works with protocols the object may or may not extend

CAUTION: If an object is an optional it wont work unless you “unwrap” it with the “!” char

UPDATE 1: There is now an article named “==Asserting class and protocol==”. Which elegantly compares class and protocol types with generics.