Hi, I'm trying to replace few data structures and types defined in my application in terms of std containers, with the mutli_index_container. Some of those types look like this: struct Entry { int someForeignKey; int data1; std::string data2; //.... }; typedef std::deque<Entry> Entries; typedef std::map<int, Entries> EntriesByForeignKey; I'd like to rewrite the above map as follows: typedef mi::multi_index_container < Entry, mi::indexed_by < mi::hashed_non_unique<mi::tag<foreignKey>, mi::member<Entry, int, &Entry::someForeignKey> >
Entries;
typedef Entries::index<foreignKey>::type EntriesByForeignKey; Now, I'd like to iterate through the *keys* of this index, and for each key - iterate through all its values. IIUC, the second part can be accomplished like this: { Entries entries; EntriesByForeignKey::iterator begin = entries.get<foreignKey>().find(theKey), end = entries.get<foreignKey>().end(); for_each (begin, end, ....); } ...but how can I iterate through all the keys of this index? Or should I define another index for this purpose (sequenced one?) ? Thank you, Igor'.