Comment by solid_fuel

If I was going to nitpick it I would point out that `itemsCount` could easily be confused with `items.Count`, or vice versa, depending on syntax highlighting. That kind of bug can have a negative impact if one or the other is mutated while the function is running.

So clearly distinguishing the local `numberOfItems` from `items.Count` _could_ be helpful. But I wouldn't ping it in a review.