forward_list.hpp

#include <initializer_list>

namespace std {
  // forwardlist, class template forward_list
  template <class T, class Allocator = allocator<T>> class forward_list;
  template <class T, class Allocator>
    bool operator==(const forward_list<T, Allocator>& x, const forward_list<T, Allocator>& y);
  template <class T, class Allocator>
    bool operator< (const forward_list<T, Allocator>& x, const forward_list<T, Allocator>& y);
  template <class T, class Allocator>
    bool operator!=(const forward_list<T, Allocator>& x, const forward_list<T, Allocator>& y);
  template <class T, class Allocator>
    bool operator> (const forward_list<T, Allocator>& x, const forward_list<T, Allocator>& y);
  template <class T, class Allocator>
    bool operator>=(const forward_list<T, Allocator>& x, const forward_list<T, Allocator>& y);
  template <class T, class Allocator>
    bool operator<=(const forward_list<T, Allocator>& x, const forward_list<T, Allocator>& y);
  template <class T, class Allocator>
    void swap(forward_list<T, Allocator>& x, forward_list<T, Allocator>& y)
      noexcept(noexcept(x.swap(y)));

  namespace pmr {
    template <class T>
      using forward_list = std::forward_list<T, polymorphic_allocator<T>>;
  }
}