On Dec 3, 2010, at 6:04 PM, Terry Reedy wrote: > gc is implementation specific. CPython uses ref counting + cycle gc. A > constraint on all implementations is that objects have a fixed, unique id > during their lifetime. CPython uses the address as the id, so it cannot move > objects. Other implementations do differently. Compacting gc requires an id > to current address table or something.
It's somewhat unfortuante that python has this constraint, instead of the looser: "objects have a fixed id during their lifetime", which is much easier to implement, and practically as useful. James _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
