Re: [Boost-users] Multi-index container (Modifying non-unique key in the container)

(Excuse the slow pace of this thread, I've been on vacation with little access to the Internet). ________________________________ De: boost-users-bounces@lists.boost.org [boost-users-bounces@lists.boost.org] En nombre de Ramesh [rramesh1@gmail.com] Enviado el: jueves, 21 de agosto de 2008 0:17 Para: boost-users@lists.boost.org Asunto: Re: [Boost-users] Multi-index container (Modifying non-unique key in the container) On Wed, Aug 20, 2008 at 8:02 AM, JOAQUIN M. LOPEZ MUÑOZ mailto:joaquin@tid.es> wrote: Yes, but DataMap seems to *replicate* the keys that are already present in A. Cannot you just have the following? typedef multi_index_container< A*, indexed_by< ordered_unique< tag <Key1>, BOOST_MULTI_INDEX_MEMBER(A,std::string,Key1)>, ordered_non_unique< tag<Key2>,BOOST_MULTI_INDEX_MEMBER(A,long,Key2)>, ordered_unique< tag<Key3>,BOOST_MULTI_INDEX_MEMBER(A,long,Key3)> >

tDMap;

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If I would remove the keys the map would just hold pointers and I wouldnt be able to do lookups based on the keys (to retrieve pointers to objects based on keys) if I wouldnt pair the pointers with they keys in the Map - thats why I have the keys in the map, please correct me if am wrong. You can use the members of the pointed to objects of type A as keys of your container. This is discussed in detail at:

http://www.boost.org/libs/multi_index/doc/reference/key_extraction.html#chai... In particular, I think that the tDMap definition I gave above should work directly. Please report back if this is not the case. Joaquín M López Muñoz Telefónica, Investigación y Desarrollo