lively-osmium-3954

readme.md

lively-osmium-3954

Created with <3 with dartpad.dev.

main.dart

typedef Callback = Object Function();

void main() async {
  
  final res = request(false); 
  
  final mesg = switch (res) {
    OkResponse() => "houston we are ok",
    ErrResponse() => "houston we have a problem"
  };

  print(mesg);
}

Response request(bool stirOxygen) {
  if (stirOxygen) {
    return ErrResponse();
  } else {
    return OkResponse();
  }
}

sealed class Response {}

class OkResponse extends Response{}

class ErrResponse extends Response{}