AJD wrote:
Thanks, this works great. The only problem is that vector<> is intended as a wrapper class, and I just implemented it as an array for convenience in this example. It could have any underlying type, not necessarily an array. Is there a proper way to do this without exposing vector<>'s underlying type?
I'm confused. So your vector2<> type is intended as a wrapper for any kind of terminal, not arrays? So how is your example different than any of the examples in proto's docs? Have you tried using proto::extends<> (or BOOST_PROTO_EXTENDS) to extend terminal<T>::type instead of terminal<float[3]>::type ? You'll also need to patch up your grammar to accept any kind of terminal. -- Eric Niebler Boost Consulting www.boost-consulting.com