On 03/10/08 14:41, Eric Niebler wrote: [snip]
If you want to play with the variadic Proto code, you can find it at branches/proto/v3. I recently resurrected this branch because some people on the std committee were interested in it. It's not production code, though.
The args.hpp code here: http://svn.boost.org/trac/boost/browser/branches/proto/v3/boost/xpressive/pr... around line 61 contains: #define BOOST_PP_ITERATION_PARAMS_1 (3, (1, BOOST_PROTO_MAX_ARITY, <boost/xpressive/proto/args.hpp>)) 58 #include BOOST_PP_ITERATE() 59 60 #ifdef BOOST_HAS_VARIADIC_TMPL 61 template<BOOST_PP_ENUM_PARAMS(BOOST_PROTO_MAX_ARITY, typename A), typename... Args> 62 struct args< BOOST_PP_ENUM_PARAMS(BOOST_PROTO_MAX_ARITY, A), Args... > 63 { 64 BOOST_STATIC_CONSTANT(long, size = BOOST_PROTO_MAX_ARITY + sizeof...(Args)); 65 I don't understand why BOOST_PP_ENUM_PARMS is used in the same statement as Args.... AFAICT, the BOOST_PP_ENUM_PARMS should be used when #undef BOOST_HAS_VARIADIC_TMPL and the Args... when #define BOOST_HAS_VARIADIC_TMPL. Am I missing something?