----- Mensaje original ----- De: Jeremy Maitin-Shepard <jbms@attbi.com> Fecha: Jueves, Abril 1, 2004 8:35 pm Asunto: Re: [boost] Re: Formal Review: Indexed Set

I believe you should leave in the support for multiple tags per index. Possible use cases include:

- Including the key type as an index tag.

- Using tags to flag various fields for some other algorithm -- in this case, different fields could be flagged for use by various different algorithms.

If I'm understanding you, the case use you propose could be illegal. Do you mean something like: indexed_set< int, index_list< unique<tag<first,marked>,...>, non_unique<tag<second>,...>, non_unique<tag<third,marked>,...>

So that "marked" can be taken advantage of by some algorithm? If so, this clashes with a request by Brian McNamara that duplicate tags be not allowed. If you mean something else, I'd appreciate if you could ellaborate. Joaquín M López Muñoz Telefónica, Investigación y Desarrollo