"Delfin Rojas"
I am having a problem with the mpl library and I wonder if someone could help me with it. Basically I am trying to get a joint_view of two mpl::vector types and I get an error message on mpl/clear.hpp saying
clear_traits< Tag > ::template algorithm< Sequence >
base class undefined.
I tried including several of the mpl hpp files, the ones that seemed could have something to do with this problem but that didn't help. I also get a similar problem trying to use mpl::push_back. In this case I get
push_back_traits< Tag > ::template algorithm< Sequence,T >
Base class undefined.
On the other hand mpl::push_front and mpl::insert compile beautifully.
The error messages you are getting basically say: "This algorithm is undefined for this type of sequence." I never used joint_view, but the push_back is currently not defined for the mpl::vector. AFAIK, this is going to be corrected in the next version of Boost (which is currently being put together). Also, if you are trying to use push_back in combination with, say, fold, this can be replaced with push_front in combination with fold_backward. HTH, Arkadiy