26 Containers library [containers]

#include <initializer_list>

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

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