I watched the C++Now session about Proto v5, and now I want to play with it. I do not have the luxury of a Clang build from trunk, but I do have GCC 4.8.1 which should do pretty well.

I cloned the repository at https://github.com/ericniebler/proto-0x/. After jumping a few hoops, I am now left with tons of instances of the same errors:

- error: no type named 'proto_grammar_type' in ...
         using type = typename Ret::proto_grammar_type(Args...);

- error: no type named 'proto_action_type' in ...
         using type = typename Ret::proto_action_type(Args...);

For at least some cases, those are clear errors since the Ret type represents an empty structs (e.g. `not_`).

What is going on? What should I be doing to get Proto v5 to compile?


Agustín K-ballo Bergé.-
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