On 2 Jun., 15:19, [EMAIL PROTECTED] wrote:
> how would u assure that noone changes these objects?
> it should be considered a programatical error, so throwing an
> exception might be appropriate. i have such concept in dbcook, and it
> is implemented (so far) via an assert in
> MapperExtension.before_insert().

That's right (althought another topic).  It is surely good style to
assure this.
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