bindconv.hpp

C++模板源码 模板和泛型编程的学习资料

/* 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 "forwardparam.hpp"
#include "functorparam.hpp"

template <int P,        // position of the bound parameter
          typename FO>  // functor whose parameter is bound
inline
Binder<FO,P,BoundVal<typename FunctorParam<FO,P>::Type> >
bind (FO const& fo, 
      typename ForwardParamT
                 <typename FunctorParam<FO,P>::Type>::Type val)
{
    return Binder<FO,
                  P,
                  BoundVal<typename FunctorParam<FO,P>::Type>
                 >(fo,
                   BoundVal<typename FunctorParam<FO,P>::Type>(val)
                  );
}