On Aug 27, 2008, at 9:32 PM, mmalc crawford wrote:
Not directly. You could implement a value transformer to turn a nil
value into a number 0, or (best of all) you could use a formatter to
prevent a user from entering a nil in the first place...
For a discussion of issues as they relate to a vaguely similar
technology, see <http://www.stepwise.com/Articles/Technical/2001-06-13.01.html
>.
mmalc
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