Hi Joaquin, you wrote:
I forgot to answer one of your questions. Here it comes:
Joerg Walter <jhr.walter <at> t-online.de> writes:
One more question: is there an (easy?) way to iterate over the distinct values of an index
You can do it as you would with a std::multiset:
typedef indexed_set<...> indexed_t; typedef indexed_t::index_type<...>::type index_t;
indexed_t iset; index_t& index=iset.get<...>();
for(index::iterator it=index.begin();it!=index.end()){ // do what you want to with the value
// get next value it2=index.upper_bound(index.key_extractor()(*it)); it=it2; }
Understood, a non_unique key has multi_set characteristics, whereas a unique key has set characteristics.
(or to define the index as the set of distinct values of the related attribute(s))?
This would call for a new type of index, IHMO. Gotta think it over.
On a second thought: such a beast would be more of a view (losing the relation to indexed_set's original data) and therefore possibly out of scope for your library? Thanks, Joerg