25 Jan
2002
25 Jan
'02
1:51 p.m.
On Wed, 23 Jan 2002, Ross Boylan wrote:
I'm still wondering about class variables being persistent and the efficiency of PersistentList, if anyone has any comments.
Class variables are *not* persisted, since they are class data and not instance data. I believe that a PersistentList is a monolithic object (a Python dictionary that just has "trigger the persistence machinery" hooks wrapped around the data access methods), so accessing it will bring the whole list into memory. If you want to avoid that, and only pull in (mostly) the data that you need, take a look at the BTree object type. --RDM