/usr/include/trilinos/Teuchos_NullIteratorTraits.hpp is in libtrilinos-teuchos-dev 12.10.1-3.
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// ***********************************************************************
//
// Teuchos: Common Tools Package
// Copyright (2004) Sandia Corporation
//
// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
// license for use of this work by or on behalf of the U.S. Government.
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// modification, are permitted provided that the following conditions are
// met:
//
// 1. Redistributions of source code must retain the above copyright
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//
// 2. Redistributions in binary form must reproduce the above copyright
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// documentation and/or other materials provided with the distribution.
//
// 3. Neither the name of the Corporation nor the names of the
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
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// @HEADER
#ifndef TEUCHOS_NULL_ITERATOR_TRAITS_HPP
#define TEUCHOS_NULL_ITERATOR_TRAITS_HPP
#include "Teuchos_ConfigDefs.hpp"
namespace Teuchos {
/** \brief Base traits class for getting a properly initialized null pointer.
*
* This default traits class simply passes in a raw '0' to the constructor.
* This works for a amazingly large number of classes that can be used a an
* iterator.
*
* \ingroup teuchos_mem_mng_grp
*/
template<typename Iter>
class NullIteratorTraits {
public:
static Iter getNull()
{
#ifdef TEUCHOS_NO_ZERO_ITERATOR_CONVERSION
return Iter();
#else
return Iter(0);
#endif
}
};
/** \brief Partial specialization for std::reverse_iterator.
*
* \ingroup teuchos_mem_mng_grp
*/
template<typename Iter>
class NullIteratorTraits<std::reverse_iterator<Iter> > {
public:
static std::reverse_iterator<Iter> getNull()
{
return std::reverse_iterator<Iter>(
NullIteratorTraits<Iter>::getNull()
);
}
};
} // namespace Teuchos
#endif // TEUCHOS_NULL_ITERATOR_TRAITS_HPP
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