Hi, All,

I just have started using boost and have some questions, answers on that i couldn’t find in the documentation.

My interest is in using multi_index_container as combination of advantages of standard bidirectional list as well as fast lookup (insertion) of standard associative container (particularly set).

Let’s say we have the following definitions:

typedef boost::multi_index_container<

UserInfo,

boost::multi_index::indexed_by<

boost::multi_index::sequenced<>,

boost::multi_index::ordered_unique<

boost::multi_index::identity<UserInfo>,

UserInfoLess> > >

UsersContainer;

typedef UsersContainer::nth_index<0>::type UsersList;

typedef UsersContainer::nth_index<1>::type UsersSet;

Now we want to insert some value into this container the following way:

UsersSet& setIndex = m_Users.get<1>();

std::pair<UsersSet::iterator, bool> insRet = setIndex.insert(someVal);

The question is how can i acquire iterator of m_Users having the iterator UsersSet::iterator ?

Do iterators keep the property of set’s iterators that they remain valid after insertion of an element?

Thanks for the answers,

Vladimir Voronkov.