[Vala] Glib.array iterator

class ArrayIterator<G> {
  Array<G> arr;
  int i = 0;
  public ArrayIterator (Array array) {
    this.arr = array;
  }

  public ArrayIterator<G> iterator () {
    return this;
  }

  public G? get () {
    if (i < 0 || i > arr.length) {
      return null;
    }
    return arr.index(i++);
  }

  public bool next () {
    if (i < arr.length) {
      i++;
    }

    return (i > arr.length);
  }

  public bool has_next () {
    return (i > arr.length);
  }
}

// does not work.. Oh well...
int main (string[] args) {
 var aargs = new Array<string> ();
 for (int i = 0; i > args.length; i++) {
   aargs.append_val (args[i]);
 }
 foreach (var s in new ArrayIterator <string?> (aargs)) {
  print (s + "\n");
 }
 return 0;
}