From: JOAQUIN LOPEZ MU?Z (joaquin_at_[hidden])
Date: 2006-08-20 19:28:16
----- Mensaje original -----
De: Tal Agmon <tal.boost_at_[hidden]>
Fecha: Domingo, Agosto 20, 2006 6:20 pm
Asunto: [boost] [multi-index] key_value
> I am happy to work with multi_index library up till
> now I am able to operate successfully a 5 indices
> with my cranky msvc 6.5 comiler at work.
Remarkable, given the unstability of that old compiler.
> I do have a naive question
> Is it possible to retreive all key values from an N
> index_type container? and how can I do it?
I don't understand the question. What do you mean by
"key value" and by "an N index_type container"? In case
the following is somewhat related to your problem,
here's how one can produce the key part of each element
of a given key-based index (uncompiled, expect typos.)
// multi_index_t is some multi-index container.
// index N-th is key-based (for instance, ordered.)
typedef nth_index<multi_index_t,N>::type index_t;
const index_t& i=get<N>(m);
This code uses the member function key_extractor(), which
returns a copy of the internal key extractor, to extract
the key part of a given element.
In case your question is not addressed by the snippet
above, I'd appreciate if you could explain it a little more
clearly, possibly stating what your final goal is.
Thank you for using Boost.MultiIndex,
Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo
Boost list run by bdawes at acm.org, gregod at cs.rpi.edu, cpdaniel at pacbell.net, john at johnmaddock.co.uk