Snippet 10: Late circular references

main.dart

// The `late` keyword can be really helpful
// for tricky patterns like circular
// references. Here are two objects that
// need to maintain non-nullable references
// to each other. Try using the `late`
// keyword to fix this code.

class Team {
  final Coach coach;
}

class Coach {
  final Team team;
}

void main() {
  final myTeam = Team();
  final myCoach = Coach();
  myTeam.coach = myCoach;
  myCoach.team = myTeam;
  
  print ('All done!');
}

// When you added `late`, did you remove
// `final`? If so, you don't have to! Late
// fields can also be final: you set their
// values once, and after that they're
// read-only.