My First Dart Closure

alternative_syntax.dart

main() {
  var incMaker = () {
    var x = 0;
    var inc = () {
      x += 1;
      return x;
    };
    return inc;
  };
  var inc = incMaker();
  print(inc());
  print(inc());
  print(inc());
}

closure.dart

main() {
  incMaker() {
    var x = 0;
    inc() {
      x += 1;
      return x;
    }
    return inc;
  }
  var inc = incMaker();
  print(inc());
  print(inc());
  print(inc());
}