[Boost-users] [boost::concept_check] Question about possible feature

Hi! Thanks for the great library. Currently I have to deal with constants as template parameters and I wonder, why there is no library to model constant concepts. Like: template struct Allocator { Allocator()throw(); }; template Allocator::Allocator()throw() { boost::function_requires >(); } I understand I could model it with BOOST_MPL_ASSERT etc. But would not it be better to unite all these features in one lib? With Kind Regards, Ovanes Markarian