Other Extensions The following extensions are available globally. String See more Declaration Swift struct String Error See more Declaration Swift protocol Error RawRepresentable See more Declaration Swift protocol RawRepresentable Foundation Undocumented See more HTTPURLResponse See more Declaration Swift class HTTPURLResponse : URLResponse URLRequest Undocumented See more Date See more Declaration Swift struct Date : ReferenceConvertible, Comparable, Equatable Scanner Undocumented See more URL See more Declaration Swift struct URL : ReferenceConvertible, Equatable