Hi, Just thought I would share some code that serializes Boost.Tuple using Boost.Serialization: #include <boost/tuple/tuple.hpp> #include <boost/serialization/nvp.hpp> #include <boost/preprocessor/repetition.hpp> namespace boost { namespace serialization { #define GENERATE_ELEMENT_SERIALIZE(z,which,unused) \ ar & boost::serialization::make_nvp("element",t.get< which >()); #define GENERATE_TUPLE_SERIALIZE(z,nargs,unused) \ template< typename Archive, BOOST_PP_ENUM_PARAMS(nargs,typename T) > \ void serialize(Archive & ar, \ boost::tuple< BOOST_PP_ENUM_PARAMS(nargs,T) > & t, \ const unsigned int version) \ { \ BOOST_PP_REPEAT_FROM_TO(0,nargs,GENERATE_ELEMENT_SERIALIZE,~) \ } BOOST_PP_REPEAT_FROM_TO(1,10,GENERATE_TUPLE_SERIALIZE,~); }} It does not handle 0-element tuples (not sure that it should, actually!) Kudos to the insanity that produced Boost.Preprocessor. -- Sohail Somani http://uint32t.blogspot.com