partial_sort_copy.hpp 2.8 KB

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  1. // Copyright Neil Groves 2009. Use, modification and
  2. // distribution is subject to the Boost Software License, Version
  3. // 1.0. (See accompanying file LICENSE_1_0.txt or copy at
  4. // http://www.boost.org/LICENSE_1_0.txt)
  5. //
  6. //
  7. // For more information, see http://www.boost.org/libs/range/
  8. //
  9. #ifndef BOOST_RANGE_ALGORITHM_PARTIAL_SORT_COPY_HPP_INCLUDED
  10. #define BOOST_RANGE_ALGORITHM_PARTIAL_SORT_COPY_HPP_INCLUDED
  11. #include <boost/concept_check.hpp>
  12. #include <boost/range/begin.hpp>
  13. #include <boost/range/end.hpp>
  14. #include <boost/range/concepts.hpp>
  15. #include <boost/range/value_type.hpp>
  16. #include <algorithm>
  17. namespace boost
  18. {
  19. namespace range
  20. {
  21. /// \brief template function partial_sort_copy
  22. ///
  23. /// range-based version of the partial_sort_copy std algorithm
  24. ///
  25. /// \pre SinglePassRange is a model of the SinglePassRangeConcept
  26. /// \pre RandomAccessRange is a model of the Mutable_RandomAccessRangeConcept
  27. /// \pre BinaryPredicate is a model of the BinaryPredicateConcept
  28. template<class SinglePassRange, class RandomAccessRange>
  29. inline BOOST_DEDUCED_TYPENAME range_iterator<RandomAccessRange>::type
  30. partial_sort_copy(const SinglePassRange& rng1, RandomAccessRange& rng2)
  31. {
  32. BOOST_RANGE_CONCEPT_ASSERT((SinglePassRangeConcept<const SinglePassRange>));
  33. return std::partial_sort_copy(boost::begin(rng1), boost::end(rng1),
  34. boost::begin(rng2), boost::end(rng2));
  35. }
  36. /// \overload
  37. template<class SinglePassRange, class RandomAccessRange>
  38. inline BOOST_DEDUCED_TYPENAME range_iterator<RandomAccessRange>::type
  39. partial_sort_copy(const SinglePassRange& rng1, const RandomAccessRange& rng2)
  40. {
  41. BOOST_RANGE_CONCEPT_ASSERT((SinglePassRangeConcept<const SinglePassRange>));
  42. return std::partial_sort_copy(boost::begin(rng1), boost::end(rng1),
  43. boost::begin(rng2), boost::end(rng2));
  44. }
  45. /// \overload
  46. template<class SinglePassRange, class RandomAccessRange,
  47. class BinaryPredicate>
  48. inline BOOST_DEDUCED_TYPENAME range_iterator<RandomAccessRange>::type
  49. partial_sort_copy(const SinglePassRange& rng1, RandomAccessRange& rng2,
  50. BinaryPredicate pred)
  51. {
  52. BOOST_RANGE_CONCEPT_ASSERT((SinglePassRangeConcept<const SinglePassRange>));
  53. return std::partial_sort_copy(boost::begin(rng1), boost::end(rng1),
  54. boost::begin(rng2), boost::end(rng2), pred);
  55. }
  56. /// \overload
  57. template<class SinglePassRange, class RandomAccessRange,
  58. class BinaryPredicate>
  59. inline BOOST_DEDUCED_TYPENAME range_iterator<const RandomAccessRange>::type
  60. partial_sort_copy(const SinglePassRange& rng1, const RandomAccessRange& rng2,
  61. BinaryPredicate pred)
  62. {
  63. BOOST_RANGE_CONCEPT_ASSERT((SinglePassRangeConcept<const SinglePassRange>));
  64. return std::partial_sort_copy(boost::begin(rng1), boost::end(rng1),
  65. boost::begin(rng2), boost::end(rng2), pred);
  66. }
  67. } // namespace range
  68. using range::partial_sort_copy;
  69. } // namespace boost
  70. #endif // include guard