IFunctor.h

#ifndef UTIL_I_FUNCTOR_H
#define UTIL_I_FUNCTOR_H

/*
* Util Package - C++ Utilities for Scientific Computation
*
* Copyright 2010 - 2017, The Regents of the University of Minnesota
* Distributed under the terms of the GNU General Public License.
*/

#include <list>

namespace Util
{

   template <typename T=void>
   class IFunctor {

   public:

      virtual ~IFunctor(){}

      virtual void operator () (const T& t) = 0;

   };

   // Functor for functions with no arguments.

   template <>
   class IFunctor<void> {

   public: 

      virtual ~IFunctor(){}

      virtual void operator () () = 0; 

   };

}
#endif