/* 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. */#include "ifthenelse.hpp"template<typename F, int P>class BinderParams {  public:    // there is one less parameter because one is bound:    enum { NumParams = F::NumParams-1 };#define ComposeParamT(N)                                       \    typedef typename IfThenElse<(N<P), FunctorParam<F, N>,     \                                       FunctorParam<F, N+1>    \                               >::ResultT::Type                \            Param##N##T    ComposeParamT(1);    ComposeParamT(2);    ComposeParamT(3);    //...#undef ComposeParamT};