https://github.com/apple/swift/pull/33674

[Concurrency] Import Objective-C methods with completion handlers ...

When a given Objective-C method has a completion handler parameter with an appropriate signature, import that Objective-C method as async. For example, consider the following CloudKit API:

(void)...

1:50 PM

c++ static bool isCompletionHandlerParamName(StringRef paramName) { return paramName == "completionHandler" || paramName == "completion" || paramName == "withCompletionHandler"; }

1:50 PM

↑アツい

1:52 PM

 parser.add_argument('--enable-experimental-concurrency', action='store_true', help='Enable experimental concurrency model.')