[Boost-users] [mpl] Where is at with default

I can't seem to find the `at` metafunction with a default value for associative sequences. What should I include to use such metafunction with a mpl::map ? Including is not enough, I get a 'too many templates arguments' when trying to do: typename boost::mpl::at< State, R, L >::type which I ended up doing like this: typename boost::mpl::eval_if< typename boost::mpl::has_key< State, R >::type , boost::mpl::at< State, R > , boost::mpl::identity< L >

::type

Thank you.- Agustín K-ballo Bergé.-