From: Peter Dimov (pdimov_at_[hidden])
Date: 2002-06-13 05:37:15
From: "Itay Maman" <itay_maman_at_[hidden]>
>
> The variant implementation relies on the ability to map concrete types
> to integers. My implementation uses the index_of TypeList algorithm, for
> instance.
>
> So, unless we'll come-up with some birlliant way to do this mapping
> differently, we will not be able to implement a variant whose list of
> legal (concrete) types is 'open'.
It is possible to implement an 'open' list via inheritance.