> > Hi, > > > > Does anybody know how to implement type traits that will allow me to check > > whether argument type T is instance od template A. Particularly I am > > interested in mpl sequences. I.e.: > > > > is_instance_of<T,mpl::list>::value > > Check out boost/lambda/detail/is_instance_of.hpp > > /Jaakko
1. Could we make it an "official" type trait? 2. Could we make if work with no template template support? I was thinking about: is_instance_of<T,mpl::list<_> >::value But I do not understand how mpl::lambda is working yet, so it could be complete nonsense. 3. Why there is no namely is_instance_of version without number of template parameters explicitly specified. Could not you deduce it automatically? 4. Why it is limited only to 4 template parameters? Gennadiy. _______________________________________________ Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost
