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#ifndef PYTHONIC_BUILTIN_SORTED_HPP
#define PYTHONIC_BUILTIN_SORTED_HPP

#include "pythonic/include/builtins/sorted.hpp"

#include "pythonic/types/list.hpp"
#include "pythonic/utils/functor.hpp"
#include "pythonic/utils/pdqsort.hpp"

#include <algorithm>

PYTHONIC_NS_BEGIN

namespace builtins
{

  template <class Iterable>
  types::list<typename std::remove_cv<typename std::iterator_traits<
      typename std::decay<Iterable>::type::iterator>::value_type>::type>
  sorted(Iterable &&seq)
  {
    types::list<typename std::remove_cv<typename std::iterator_traits<
        typename std::decay<Iterable>::type::iterator>::value_type>::type>
        out(seq.begin(), seq.end());
    pdqsort(out.begin(), out.end());
    return out;
  }

  template <class Iterable, class Key>
  types::list<typename std::remove_cv<typename std::iterator_traits<
      typename std::decay<Iterable>::type::iterator>::value_type>::type>
  sorted(Iterable &&seq, Key const &key, bool reverse)
  {
    using value_type = typename std::remove_cv<typename std::iterator_traits<
        typename std::decay<Iterable>::type::iterator>::value_type>::type;
    types::list<value_type> out(seq.begin(), seq.end());
    if (reverse)
      pdqsort(out.begin(), out.end(),
              [&key](value_type const &self, value_type const &other) {
                return key(self) > key(other);
              });
    else
      pdqsort(out.begin(), out.end(),
              [&key](value_type const &self, value_type const &other) {
                return key(self) < key(other);
              });
    return out;
  }

  template <class Iterable>
  types::list<typename std::remove_cv<typename std::iterator_traits<
      typename std::decay<Iterable>::type::iterator>::value_type>::type>
  sorted(Iterable &&seq, types::none_type const &key, bool reverse)
  {
    using value_type = typename std::remove_cv<typename std::iterator_traits<
        typename std::decay<Iterable>::type::iterator>::value_type>::type;
    types::list<value_type> out(seq.begin(), seq.end());
    if (reverse)
      pdqsort(out.begin(), out.end(),
              [](value_type const &self, value_type const &other) {
                return self > other;
              });
    else
      pdqsort(out.begin(), out.end());
    return out;
  }
}
PYTHONIC_NS_END

#endif

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