>That would be a false negative. A false positive would be a class which is subclassed, but subclasses are never used.
Yeah, I did think about that possibility, but I think that would be no problem. After deleting the unused subclasses, I could run the hypothetical process again, and detect the superclass.
> Also, if you're using a data-driven class factory, you'd need to check for factory calls, to see if there are dead records in the factory table.
I am not sure how that factory thing would work.
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)