Tim Hunter wrote:
> Jeff Rose wrote:
>> Is there a way to get the current reference count for an object?
> 
> AFAIK Ruby doesn't keep track of the reference count. If you're coming 
> from Python, keep in mind that Ruby uses a mark-and-sweep GC, which is 
> fundamentally different from Python's.
> 

Aha.  Didn't think about that.  Are there callbacks or anything you can 
use to implement reference counting without having to use special 
methods for referencing an object?