iOS: What is a difference between dequeueReusableCell(withIdentifier:for:) and dequeueReusableCell(withIdentifier:)?

Question

According to the official documentation, there are two ways to get a reusable cell from a queue of a tableView. One is dequeueReusableCell(withIdentifier:for:)

Answer 1

Method dequeueReusableCell(withIdentifier:) is older than dequeueReusableCell(withIdentifier:for:), and the main difference between them is that first will return nil, if cell don't registered, the second will throw an exception, and an app will crash. IndexPath requires for height calculation(if defined tableView:heightForRowAtIndexPath)