libraries are imported using the import
keyword:
// app.dart
library app;
import 'utils.dart';
main() {
print(shout('Welcome'));
print(whisper('Welcome'));
}
libraries can be split into parts using the part
and part of
syntax:
// utils.dart
library utils;
part 'whisper.dart';
String shout(String inp) => inp.toUpperCase() + '!!!';
// whisper.dart
part of utils;
String whisper(String inp) => inp.toLowerCase() + '...';
$ app.dart
WELCOME!!!
welcome...