RNTableView.m

- (void)insertReactSubview:(UIView *)subview atIndex:(NSInteger)atIndex {
  // will not add them as subviews yet because we don't need to draw them
  // [super insertSubview:subview atIndex:atIndex];
  [_unusedCells addObject:subview];
}

- (UIView*) getUnusedCell {
  UIView* res = [_unusedCells lastObject];
  [_unusedCells removeLastObject];
  if (res != nil) {
    res.tag = [_unusedCells count];
  }
  return res;
}

- (UITableViewCell *)tableView:(UITableView *)theTableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
  static NSString *cellIdentifier = @"CustomCell";
  TableViewCell *cell = (TableViewCell *)[theTableView dequeueReusableCellWithIdentifier:cellIdentifier];
  if (cell == nil) {
    cell = [[TableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier];
    cell.cellView = [self getUnusedCell];
    NSLog(@"Allocated childIndex %d for row %d", (int)cell.cellView.tag, (int)indexPath.row);
  } else {
    NSLog(@"Recycled childIndex %d for row %d", (int)cell.cellView.tag, (int)indexPath.row);
  }
  // there's another interesting piece still missing here..
  return cell;
}