[ZDP] FAQ Entry (was: RE: [Zope-dev] New Counter Product)
John Eikenberry <email@example.com>
Thu, 25 Mar 1999 11:04:03 -0800 (PST)
Shaw, Howard asked...
- How can I create a variable within a Product that will not be
persistent (i.e. will not be written to disk)?
Prefix your variable name with _v_. If you don't want the
attribute foo to be persistent, call it _v_foo.
ZODB cannot detect changes to mutable objects that are not treated
as immutable. So I suppose that if your object includes a list, a
dictionary or a non persistence instance then any changes to these
objects will go undetected by ZODB.
[firstname.lastname@example.org - http://taos.kavi.com/~jae/]
"A society that will trade a little liberty for a little order
will deserve neither and lose both."