/*

 * Copyright 2011 Steven Gribble

 *

 *  This file is the solution to an exercise problem posed during

 *  one of the UW CSE 333 lectures (333exercises).

 *

 *  333exercises is free software: you can redistribute it and/or modify

 *  it under the terms of the GNU General Public License as published by

 *  the Free Software Foundation, either version 3 of the License, or

 *  (at your option) any later version.

 *

 *  333exercises is distributed in the hope that it will be useful,

 *  but WITHOUT ANY WARRANTY; without even the implied warranty of

 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 *  GNU General Public License for more details.

 *

 *  You should have received a copy of the GNU General Public License

 *  along with 333exercises.  If not, see <http://www.gnu.org/licenses/>.

 */



// toy-pointer lecture exercise



#ifndef _TRIPLE_H_

#define _TRIPLE_H_





// A "Triple" is a templated class that contains three things.

template <class T1, class T2, class T3> class Triple {

 public:

  // Constructs a triple given three things as arguments.

  Triple(const T1 &first, const T2 &second, const T3 &third)

    : first_(first), second_(second), third_(third) { }



  // Constructs a triple given a triple as an argument.

  template <class U1, class U2, class U3>

    Triple(const Triple<U1, U2, U3> &t)

    : first_(t.first_), second_(t.second_), third_(t.third_) { }



  // Constructs a triple given no arguments.

  Triple() : first_(T1()), second_(T2()), third_(T3()) { }



  // The data members.

  T1 first_;

  T2 second_;

  T3 third_;



  // Some useful typedefs.

  typedef T1 first_type;

  typedef T2 second_type;

  typedef T3 third_type;

};  // class Triple





#endif  // _TRIPLE_H_