import 'package:xdart_test/Bicycle.dart'; import 'package:xdart_test/xdart_test.dart' as c_test; // void main(List arguments) { for (var arg in arguments) { print(arg); } var bike = Bicycle(age: 100); var info = bike.toString(); var json = bike.toJson(); print('bike info:$json'); var num = 100; print('this is num:$num'); print('Hello world: ${c_test.calculate()}!'); }