A templated member function, with template arguments not used in the parameter list can be called in the following form:
struct C { template <class> func (); };
C c;
C.func <int>();
But how do I call a template constructor, which does not use a template parameter in its argument list?
struct D { template <class> D (); };
Certainly
D<int> d;
Cannot be the syntax, as this is the construction of a variable of type D <int>,, which is an instantiation of class template D<class>.
This is not just an academic question, I have use for templated constructors (not using the template in the constructor argument list), basically policybased factories and currently use a dummy parameter mpl::identity <mytype>() as a workaround.