[Boost-users] MPL. Nested Lambdas

Please, tell me if one can write nested lambda expressions like " template<class Result, class Seq, class Elem> struct pairs: bm::fold<Seq, Result, bm::push_back<_1,bm::pair<Elem, _2 > > >{}; template<class Seq1, class Seq2> struct AllPairs: bm::fold<Seq1, bm::vector<>, pairs<_1,Seq2,_2> >{}; " without using intermediate metafunctions.