/* The following code example is taken from the book * "C++ Templates - The Complete Guide" * by David Vandevoorde and Nicolai M. Josuttis, Addison-Wesley, 2002 * * (C) Copyright David Vandevoorde and Nicolai M. Josuttis 2002. * Permission to copy, use, modify, sell and distribute this software * is granted provided this copyright notice appears in all copies. * This software is provided "as is" without express or implied * warranty, and with no claim as to its suitability for any purpose. */template <typename FO, int P, typename V>class Binder : private FO, private V {  public:    //...    ReturnT operator() (Param1T v1, Param2T v2, Param3T v3) {        return FO::operator()(ArgSelect<1>::from(v1,v1,V::get()),                              ArgSelect<2>::from(v1,v2,V::get()),                              ArgSelect<3>::from(v2,v3,V::get()),                              ArgSelect<4>::from(v3,v3,V::get()));    }    //...};