I recently had to use Boost Iterator Facade and its relatives and found the idea great. It occured to me whiel lookign at my X different, hand written allocaotrs for various project that maybe such a system for writing std allocator could be great. Buildign a new allcoator will just be impelemnt some allocator_facade<> adn fill some small scale methods. Moreover, it could be the opportunity to add new allocator concept like allocator supporting resize calls, allcoator with state, allcoator with a allocated() method etc... and reality-check them in the boost framework. How does it sounds ? -- ___________________________________________ Joel Falcou - Assistant Professor PARALL Team - LRI - Universite Paris Sud XI Tel : (+33)1 69 15 66 35