Shaun Cutts wrote:
It would seem that the current default mechanism is poorly suited to
providing default values for non-immutables. For example:
"Mutable" is a better way to say "non-immutable". :-)
class IBar( Interface ):
a = Object( schema = IFoo, default = Foo() )
But if a “Foo” is not immutable this doesn’t make sense. (In my case, I
want “a” to be a collection providing IFoo, which defaults to an empty
collection. Each Bar implementing IBar should have its own instance of Foo.)
I've run into this myself. How about:
a = Object(schema=IFoo, default_factory=Foo)
?
Shane
_______________________________________________
Zope3-dev mailing list
Zope3-dev@zope.org
Unsub: http://mail.zope.org/mailman/options/zope3-dev/archive%40mail-archive.com
