[ZDP] FAQ Entry (was: RE: [Zope-dev] New Counter Product)

[John Eikenberry]

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)?

	(Michel Pelletier)
	Prefix your variable name with _v_.  If you don't want the
	attribute foo to be persistent, call it _v_foo.

	OR

	(Pavlos Christoforou)
	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.


---

John Eikenberry
[jae@kavi.com - http://taos.kavi.com/~jae/] 
______________________________________________________________
"A society that will trade a little liberty for a little order
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