For those interested in indexed_set, release 9 is available at: http://groups.yahoo.com/group/boost/files/indexed_set.zip the sandbox version is not in sync, it'll be by tomorrow. New features: * Added a new index type called "sequenced", which sorts the elements in the order they were inserted. In fact, sequenced indices mimic the functionality of std::list, which allows to build, for instance, list-like containers with fast lookup (by combining a sequenced index and a non_unique index.) There're no docs about sequenced yet, but an example of use is provided (example 5 in the examples section.) * Added a new section with performance measurements, showing that in general indexed_set does it better wrt to memory and time than handcrafted compositions of containers. * indexed_set works with Boost 1.31.0 (some fixing had to be made because of changes in Boost.Iterator.) * Some internal improvements that do not affect the library interface. To be completed: * For the moment being, sequenced is not documented (save some scattered references to it.) The task is not trivial, because original docs were strictly focused on set-like indices, and large portions of the material will have to be rewritten. BTW, volunteers with skills at writing are most welcome. * Compiler status is outdated. The library has been confirmed to work in GCC 3.3.1, ICC 7.1 and MSVC 6.5. Reports about other compilers appreciated. As always, I'm very much interested in knowing others' comments about the library. Joaquín M López Muñoz Telefónica, Investigación y Desarrollo