CountingOperators.hpp

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/*

Copyright (C) 2003-2009 Kevin Thornton, krthornt[]@[]uci.edu

Remove the brackets to email me.

This file is part of libsequence.

libsequence 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.

libsequence 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
long with libsequence.  If not, see <http://www.gnu.org/licenses/>.

*/

#ifndef __COUNTING_OPERATORS_HPP__
#define __COUNTING_OPERATORS_HPP__
#include <algorithm>
#include <functional>
#include <map>
#include <vector>
#include <set>
namespace Sequence
{
  template<typename key,typename value>
  struct first_is_equal : public std::binary_function< std::pair<key,value>,
                                                       std::pair<key,value>,bool>
  {
    inline bool operator()(const std::pair<key,value> &l,
                           const std::pair<key,value> &r) const
    {
      return l.first==r.first;
    }
  };
  
  template<typename key, typename value>
  std::vector<std::pair<key,value> >
  operator+(const std::vector<std::pair<key,value> > &lhs,
            const std::vector<std::pair<key,value> > &rhs);


  template<typename key, typename value>
  std::vector<std::pair<key,value> >
  operator+=( std::vector<std::pair<key,value> > &lhs,
              const std::vector<std::pair<key,value> > &rhs);

  template< typename key, typename value,
            typename comparison>
  std::map<key,value,comparison> operator+(const std::map<key,value,comparison> &lhs,
                                           const std::map<key,value,comparison> &rhs);

  template< typename key, typename value, typename comparison>
  std::map<key,value,comparison> operator+=( std::map<key,value,comparison> &lhs,
                            const std::map<key,value,comparison> &rhs);
}
#include <Sequence/bits/CountingOperators.tcc>
#endif