[ZODB-Dev] use PersistentList and PersistenDict when?

[Chris McDonough]

Hi David,

ZODB cannot detect the mutation of simple, non-instance (aka "basic
type") objects.  This most frequently happens with lists and
dictionaries (which are the only mutable basic Python types). 
PersistentList and PersistentDict try to get around this by "looking
like" a dictionary or a list, and under the hood they do some
persistence shenanigans that would otherwise need to be done manually by
the caller.

For more info see http://www.zope.org/Wikis/ZODB/guide/node15.html

HTH,

- C


On Mon, 2002-12-09 at 21:19, David McCusker wrote:
> I'm looking for an explanation for when PersistentList and
> PersistentDict should be used, and what problem is being
> solved by them.  This would tell me something about what
> happens when they are not being used.
> 
> David McCusker
> 
> 
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