[elephant-devel] Unique persistent slot value

Leslie P. Polzer sky at viridian-project.de
Sun May 30 09:07:04 UTC 2010

Warren Lynn wrote:

> Is there a simple way to ensure that values of a persistent slot must be
> unique? Namely, when a instance is persisted (either with the plain
> make-instance or at the end of a transaction), an error of condition will be
> thrown if the slot value is not unique. Thank you.

There is no support for constraints like this right now.


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