Re: [Boost-users] [MultiIndex] is it possible to create multi-key key-extractors?

AMDG Mostafa wrote:

That's pretty much what I figured from the documentation, I was just hoping for some kind of workaround that I might have missed.

Well, here goes a feature request ... (A rough outline.)

I propose adding a key-extractorS concept to the multi-index library. Something along the lines of the existing key-extractor concept, modified such that

key_extractorS::result_type is a Boost.Range of keys

Sorry, but I don't think that this can be implemented in a way that is consistent with the rest of the library. You'd be better off using an auxillary map of pointers. No implementation that I can think of is going to be more efficient than that, anyway. In Christ, Steven Watanabe