Hi, I'd be interested in comments on an introspection library I've been developing. there has been no "Is there any interest..."-e-mail yet, as it was started out of necessity in "namespace detail" of another library, so you're also welcome to express interest/disinterest in a library like this, without any specific comments. source code: https://svn.boost.org/trac/boost/browser/sandbox/intro/boost/intro/ the library defines a concept that exposes the members of a class, for introspection algorithms to work with. e.g. the "print" algorithm applied to a simple object implementing the concept yields the following results: intro::print(a,std::cout); ---- { A_base = { int member_of_base = 789; }; int a = 123; float b = 456.7; vector<int,class std::allocator<int> > vec = {2, 4, 6, 8, 10}; } --- other algorithms that are currently implemented: - apply_members[_binary]: apply a user-supplied functor to each member - apply_recursive: follow pointers, references, STL container elements, etc. - serialize: serialization of an object tree of 1M objects: 80 ms. Boost.Serialization: 330 ms. serialization of an object graph of 1M objects: 410 ms. Boost.Serialization: 2700 ms. - move: move-construct an object - reset_shared planned or not yet in the sandbox are deserialize, print_recursive, copy_deep, copy_shallow, equal_deep, equal_shallow. an implementation of the concept looks like this: template<class Mapping> friend void introspect(Mapping mapping,type<A>){ mapping (base_class<A_base>() ) (member<A,int ,&A::m_a>() ) (member<A,float ,&A::m_b>() ) (member<A,std::vector<int>,&A::m_vec>()) (); } members can also be associated with tags or data, and can be assigned semantics (e.g. polymorphic, shared/unique for pointers), but I won't go into too much detail for now. Best, Stefan