Sequence.Protocol Protocol
String.Type Type

String.init init
String.self self

Any Self
(_ name: String)
x as Int
x as? Double
x as! String
x is String
init? init! init
try? try! try
true false nil
fileprivate(set) internal(set) open(set) private(set) public(set)
unowned(safe) unowned(unsafe)
async await
isolated nonisolated

#if
#error("Error")
#endif

x.as(y)
x.for(y)
#notAKeyword