testing in-place assignment and return

main.dart

getMe() {
  print("get me! heavy computation here or maybe set up a reusable API client (or something else) here");
  return 3;
}

class X {
  int? _ethersProvider; // this variable is visible only in this file, so basically this works as a "private" variable (as there is no "private" in dart)
  int? get ethersProvider => _ethersProvider ?? (_ethersProvider = getMe());
}

void main() {
  final x = new X();
  print(x.ethersProvider);
  print(x.ethersProvider);
  // will print "get me!" only once
}