simple_range.h

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// The libMesh Finite Element Library.
// Copyright (C) 2002-2019 Benjamin S. Kirk, John W. Peterson, Roy H. Stogner
 
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
 
// This library 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
// Lesser General Public License for more details.
 
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
 
 
#ifndef LIBMESH_SIMPLERANGE_H
#define LIBMESH_SIMPLERANGE_H
 
#include <utility>
 
namespace libMesh
{
 
template <typename IndexType>
class SimpleRange
{
public:
  SimpleRange(IndexType begin, IndexType end) : _begin(begin), _end(end) {}
 
  IndexType begin() const { return _begin; }
 
  IndexType end () const { return _end; }
 
private:
  IndexType _begin, _end;
};
 
 
 
template<typename IndexType>
SimpleRange<IndexType> as_range(const std::pair<IndexType, IndexType> & p)
{
  return {p.first, p.second};
}
 
 
 
template<typename IndexType>
SimpleRange<IndexType> as_range(const IndexType & first,
                        const IndexType & second)
{
  return {first, second};
}
 
} // namespace libMesh
 
#endif // LIBMESH_SIMPLERANGE_H