152 class flat_map : public ::base::internal::flat_tree<
179   flat_map() = default;
180   explicit flat_map(const Compare& comp);
183   flat_map(InputIterator first,
188   flat_map(const flat_map&) = default;
189   flat_map(flat_map&&) noexcept = default;
191   flat_map(std::vector<value_type> items,
195   flat_map(std::initializer_list<value_type> ilist,
199   ~flat_map() = default;
201   flat_map& operator=(const flat_map&) = default;
202   flat_map& operator=(flat_map&&) = default;
204   flat_map& operator=(std::initializer_list<value_type> ilist);
236   void swap(flat_map& other) noexcept;
238   friend void swap(flat_map& lhs, flat_map& rhs) noexcept { lhs.swap(rhs); }  in swap()
245 flat_map<Key, Mapped, Compare>::flat_map(const Compare& comp) : tree(comp) {}  in flat_map()  function
249 flat_map<Key, Mapped, Compare>::flat_map(InputIterator first,  in flat_map()  function
256 flat_map<Key, Mapped, Compare>::flat_map(std::vector<value_type> items,  in flat_map()  function
262 flat_map<Key, Mapped, Compare>::flat_map(  in flat_map()  function
266     : flat_map(std::begin(ilist), std::end(ilist), dupe_handling, comp) {}  in flat_map()
272 auto flat_map<Key, Mapped, Compare>::operator=(
273     std::initializer_list<value_type> ilist) -> flat_map& {
288 auto flat_map<Key, Mapped, Compare>::operator[](const key_type& key)
297 auto flat_map<Key, Mapped, Compare>::operator[](key_type&& key)
307 auto flat_map<Key, Mapped, Compare>::insert_or_assign(K&& key, M&& obj)
318 auto flat_map<Key, Mapped, Compare>::insert_or_assign(const_iterator hint,
330 auto flat_map<Key, Mapped, Compare>::try_emplace(K&& key, Args&&... args)
341 auto flat_map<Key, Mapped, Compare>::try_emplace(const_iterator hint,
356 void flat_map<Key, Mapped, Compare>::swap(flat_map& other) noexcept {  in swap()