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llvm / llvm-project / libcxx / c1dd71c8a5561eb491fcd5fb1f18887dee8cd2b1 / . / include / unordered_map
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// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP_UNORDERED_MAP
#define _LIBCPP_UNORDERED_MAP
/*
unordered_map synopsis
#include <initializer_list>
namespace std
{
template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
class Alloc = allocator<pair<const Key, T>>>
class unordered_map
{
public:
// types
typedef Key key_type;
typedef T mapped_type;
typedef Hash hasher;
typedef Pred key_equal;
typedef Alloc allocator_type;
typedef pair<const key_type, mapped_type> value_type;
typedef value_type& reference;
typedef const value_type& const_reference;
typedef typename allocator_traits<allocator_type>::pointer pointer;
typedef typename allocator_traits<allocator_type>::const_pointer const_pointer;
typedef typename allocator_traits<allocator_type>::size_type size_type;
typedef typename allocator_traits<allocator_type>::difference_type difference_type;
typedef /unspecified/ iterator;
typedef /unspecified/ const_iterator;
typedef /unspecified/ local_iterator;
typedef /unspecified/ const_local_iterator;
typedef unspecified node_type; // C++17
typedef INSERT_RETURN_TYPE<iterator, node_type> insert_return_type; // C++17
unordered_map()
noexcept(
is_nothrow_default_constructible<hasher>::value &&
is_nothrow_default_constructible<key_equal>::value &&
is_nothrow_default_constructible<allocator_type>::value);
explicit unordered_map(size_type n, const hasher& hf = hasher(),
const key_equal& eql = key_equal(),
const allocator_type& a = allocator_type());
template <class InputIterator>
unordered_map(InputIterator f, InputIterator l,
size_type n = 0, const hasher& hf = hasher(),
const key_equal& eql = key_equal(),
const allocator_type& a = allocator_type());
template<container-compatible-range<value_type> R>
unordered_map(from_range_t, R&& rg, size_type n = see below,
const hasher& hf = hasher(), const key_equal& eql = key_equal(),
const allocator_type& a = allocator_type()); // C++23
explicit unordered_map(const allocator_type&);
unordered_map(const unordered_map&);
unordered_map(const unordered_map&, const Allocator&);
unordered_map(unordered_map&&)
noexcept(
is_nothrow_move_constructible<hasher>::value &&
is_nothrow_move_constructible<key_equal>::value &&
is_nothrow_move_constructible<allocator_type>::value);
unordered_map(unordered_map&&, const Allocator&);
unordered_map(initializer_list<value_type>, size_type n = 0,
const hasher& hf = hasher(), const key_equal& eql = key_equal(),
const allocator_type& a = allocator_type());
unordered_map(size_type n, const allocator_type& a)
: unordered_map(n, hasher(), key_equal(), a) {} // C++14
unordered_map(size_type n, const hasher& hf, const allocator_type& a)
: unordered_map(n, hf, key_equal(), a) {} // C++14
template <class InputIterator>
unordered_map(InputIterator f, InputIterator l, size_type n, const allocator_type& a)
: unordered_map(f, l, n, hasher(), key_equal(), a) {} // C++14
template <class InputIterator>
unordered_map(InputIterator f, InputIterator l, size_type n, const hasher& hf,
const allocator_type& a)
: unordered_map(f, l, n, hf, key_equal(), a) {} // C++14
template<container-compatible-range<value_type> R>
unordered_map(from_range_t, R&& rg, size_type n, const allocator_type& a)
: unordered_map(from_range, std::forward<R>(rg), n, hasher(), key_equal(), a) { } // C++23
template<container-compatible-range<value_type> R>
unordered_map(from_range_t, R&& rg, size_type n, const hasher& hf, const allocator_type& a)
: unordered_map(from_range, std::forward<R>(rg), n, hf, key_equal(), a) { } // C++23
unordered_map(initializer_list<value_type> il, size_type n, const allocator_type& a)
: unordered_map(il, n, hasher(), key_equal(), a) {} // C++14
unordered_map(initializer_list<value_type> il, size_type n, const hasher& hf,
const allocator_type& a)
: unordered_map(il, n, hf, key_equal(), a) {} // C++14
~unordered_map();
unordered_map& operator=(const unordered_map&);
unordered_map& operator=(unordered_map&&)
noexcept(
allocator_type::propagate_on_container_move_assignment::value &&
is_nothrow_move_assignable<allocator_type>::value &&
is_nothrow_move_assignable<hasher>::value &&
is_nothrow_move_assignable<key_equal>::value);
unordered_map& operator=(initializer_list<value_type>);
allocator_type get_allocator() const noexcept;
bool empty() const noexcept;
size_type size() const noexcept;
size_type max_size() const noexcept;
iterator begin() noexcept;
iterator end() noexcept;
const_iterator begin() const noexcept;
const_iterator end() const noexcept;
const_iterator cbegin() const noexcept;
const_iterator cend() const noexcept;
template <class... Args>
pair<iterator, bool> emplace(Args&&... args);
template <class... Args>
iterator emplace_hint(const_iterator position, Args&&... args);
pair<iterator, bool> insert(const value_type& obj);
template <class P>
pair<iterator, bool> insert(P&& obj);
iterator insert(const_iterator hint, const value_type& obj);
template <class P>
iterator insert(const_iterator hint, P&& obj);
template <class InputIterator>
void insert(InputIterator first, InputIterator last);
template<container-compatible-range<value_type> R>
void insert_range(R&& rg); // C++23
void insert(initializer_list<value_type>);
node_type extract(const_iterator position); // C++17
node_type extract(const key_type& x); // C++17
insert_return_type insert(node_type&& nh); // C++17
iterator insert(const_iterator hint, node_type&& nh); // C++17
template <class... Args>
pair<iterator, bool> try_emplace(const key_type& k, Args&&... args); // C++17
template <class... Args>
pair<iterator, bool> try_emplace(key_type&& k, Args&&... args); // C++17
template <class... Args>
iterator try_emplace(const_iterator hint, const key_type& k, Args&&... args); // C++17
template <class... Args>
iterator try_emplace(const_iterator hint, key_type&& k, Args&&... args); // C++17
template <class M>
pair<iterator, bool> insert_or_assign(const key_type& k, M&& obj); // C++17
template <class M>
pair<iterator, bool> insert_or_assign(key_type&& k, M&& obj); // C++17
template <class M>
iterator insert_or_assign(const_iterator hint, const key_type& k, M&& obj); // C++17
template <class M>
iterator insert_or_assign(const_iterator hint, key_type&& k, M&& obj); // C++17
iterator erase(const_iterator position);
iterator erase(iterator position); // C++14
size_type erase(const key_type& k);
iterator erase(const_iterator first, const_iterator last);
void clear() noexcept;
template<class H2, class P2>
void merge(unordered_map<Key, T, H2, P2, Allocator>& source); // C++17
template<class H2, class P2>
void merge(unordered_map<Key, T, H2, P2, Allocator>&& source); // C++17
template<class H2, class P2>
void merge(unordered_multimap<Key, T, H2, P2, Allocator>& source); // C++17
template<class H2, class P2>
void merge(unordered_multimap<Key, T, H2, P2, Allocator>&& source); // C++17
void swap(unordered_map&)
noexcept(
(!allocator_type::propagate_on_container_swap::value ||
__is_nothrow_swappable<allocator_type>::value) &&
__is_nothrow_swappable<hasher>::value &&
__is_nothrow_swappable<key_equal>::value);
hasher hash_function() const;
key_equal key_eq() const;
iterator find(const key_type& k);
const_iterator find(const key_type& k) const;
template<typename K>
iterator find(const K& x); // C++20
template<typename K>
const_iterator find(const K& x) const; // C++20
size_type count(const key_type& k) const;
template<typename K>
size_type count(const K& k) const; // C++20
bool contains(const key_type& k) const; // C++20
template<typename K>
bool contains(const K& k) const; // C++20
pair<iterator, iterator> equal_range(const key_type& k);
pair<const_iterator, const_iterator> equal_range(const key_type& k) const;
template<typename K>
pair<iterator, iterator> equal_range(const K& k); // C++20
template<typename K>
pair<const_iterator, const_iterator> equal_range(const K& k) const; // C++20
mapped_type& operator[](const key_type& k);
mapped_type& operator[](key_type&& k);
mapped_type& at(const key_type& k);
const mapped_type& at(const key_type& k) const;
size_type bucket_count() const noexcept;
size_type max_bucket_count() const noexcept;
size_type bucket_size(size_type n) const;
size_type bucket(const key_type& k) const;
local_iterator begin(size_type n);
local_iterator end(size_type n);
const_local_iterator begin(size_type n) const;
const_local_iterator end(size_type n) const;
const_local_iterator cbegin(size_type n) const;
const_local_iterator cend(size_type n) const;
float load_factor() const noexcept;
float max_load_factor() const noexcept;
void max_load_factor(float z);
void rehash(size_type n);
void reserve(size_type n);
};
template<class InputIterator,
class Hash = hash<iter_key_t<InputIterator>>, class Pred = equal_to<iter_key_t<InputIterator>>,
class Allocator = allocator<iter_to_alloc_t<InputIterator>>>
unordered_map(InputIterator, InputIterator, typename see below::size_type = see below,
Hash = Hash(), Pred = Pred(), Allocator = Allocator())
-> unordered_map<iter_key_t<InputIterator>, iter_value_t<InputIterator>, Hash, Pred,
Allocator>; // C++17
template<ranges::input_range R, class Hash = hash<range-key-type<R>>,
class Pred = equal_to<range-key-type<R>>,
class Allocator = allocator<range-to-alloc-type<R>>>
unordered_map(from_range_t, R&&, typename see below::size_type = see below,
Hash = Hash(), Pred = Pred(), Allocator = Allocator())
-> unordered_map<range-key-type<R>, range-mapped-type<R>, Hash, Pred, Allocator>; // C++23
template<class Key, class T, class Hash = hash<Key>,
class Pred = equal_to<Key>, class Allocator = allocator<pair<const Key, T>>>
unordered_map(initializer_list<pair<const Key, T>>, typename see below::size_type = see below,
Hash = Hash(), Pred = Pred(), Allocator = Allocator())
-> unordered_map<Key, T, Hash, Pred, Allocator>; // C++17
template<class InputIterator, class Allocator>
unordered_map(InputIterator, InputIterator, typename see below::size_type, Allocator)
-> unordered_map<iter_key_t<InputIterator>, iter_val_t<InputIterator>,
hash<iter_key_t<InputIterator>>, equal_to<iter_key_t<InputIterator>>, Allocator>; // C++17
template<class InputIterator, class Allocator>
unordered_map(InputIterator, InputIterator, Allocator)
-> unordered_map<iter_key_t<InputIterator>, iter_val_t<InputIterator>,
hash<iter_key_t<InputIterator>>, equal_to<iter_key_t<InputIterator>>, Allocator>; // C++17
template<class InputIterator, class Hash, class Allocator>
unordered_map(InputIterator, InputIterator, typename see below::size_type, Hash, Allocator)
-> unordered_map<iter_key_t<InputIterator>, iter_val_t<InputIterator>, Hash,
equal_to<iter_key_t<InputIterator>>, Allocator>; // C++17
template<ranges::input_range R, class Allocator>
unordered_map(from_range_t, R&&, typename see below::size_type, Allocator)
-> unordered_map<range-key-type<R>, range-mapped-type<R>, hash<range-key-type<R>>,
equal_to<range-key-type<R>>, Allocator>; // C++23
template<ranges::input_range R, class Allocator>
unordered_map(from_range_t, R&&, Allocator)
-> unordered_map<range-key-type<R>, range-mapped-type<R>, hash<range-key-type<R>>,
equal_to<range-key-type<R>>, Allocator>; // C++23
template<ranges::input_range R, class Hash, class Allocator>
unordered_map(from_range_t, R&&, typename see below::size_type, Hash, Allocator)
-> unordered_map<range-key-type<R>, range-mapped-type<R>, Hash,
equal_to<range-key-type<R>>, Allocator>; // C++23
template<class Key, class T, typename Allocator>
unordered_map(initializer_list<pair<const Key, T>>, typename see below::size_type, Allocator)
-> unordered_map<Key, T, hash<Key>, equal_to<Key>, Allocator>; // C++17
template<class Key, class T, typename Allocator>
unordered_map(initializer_list<pair<const Key, T>>, Allocator)
-> unordered_map<Key, T, hash<Key>, equal_to<Key>, Allocator>; // C++17
template<class Key, class T, class Hash, class Allocator>
unordered_map(initializer_list<pair<const Key, T>>, typename see below::size_type, Hash, Allocator)
-> unordered_map<Key, T, Hash, equal_to<Key>, Allocator>; // C++17
template <class Key, class T, class Hash, class Pred, class Alloc>
void swap(unordered_map<Key, T, Hash, Pred, Alloc>& x,
unordered_map<Key, T, Hash, Pred, Alloc>& y)
noexcept(noexcept(x.swap(y)));
template <class Key, class T, class Hash, class Pred, class Alloc>
bool
operator==(const unordered_map<Key, T, Hash, Pred, Alloc>& x,
const unordered_map<Key, T, Hash, Pred, Alloc>& y);
template <class Key, class T, class Hash, class Pred, class Alloc>
bool
operator!=(const unordered_map<Key, T, Hash, Pred, Alloc>& x,
const unordered_map<Key, T, Hash, Pred, Alloc>& y); // Removed in C++20
template <class Key, class T, class Hash = hash<Key>, class Pred = equal_to<Key>,
class Alloc = allocator<pair<const Key, T>>>
class unordered_multimap
{
public:
// types
typedef Key key_type;
typedef T mapped_type;
typedef Hash hasher;
typedef Pred key_equal;
typedef Alloc allocator_type;
typedef pair<const key_type, mapped_type> value_type;
typedef value_type& reference;
typedef const value_type& const_reference;
typedef typename allocator_traits<allocator_type>::pointer pointer;
typedef typename allocator_traits<allocator_type>::const_pointer const_pointer;
typedef typename allocator_traits<allocator_type>::size_type size_type;
typedef typename allocator_traits<allocator_type>::difference_type difference_type;
typedef /unspecified/ iterator;
typedef /unspecified/ const_iterator;
typedef /unspecified/ local_iterator;
typedef /unspecified/ const_local_iterator;
typedef unspecified node_type; // C++17
unordered_multimap()
noexcept(
is_nothrow_default_constructible<hasher>::value &&
is_nothrow_default_constructible<key_equal>::value &&
is_nothrow_default_constructible<allocator_type>::value);
explicit unordered_multimap(size_type n, const hasher& hf = hasher(),
const key_equal& eql = key_equal(),
const allocator_type& a = allocator_type());
template <class InputIterator>
unordered_multimap(InputIterator f, InputIterator l,
size_type n = 0, const hasher& hf = hasher(),
const key_equal& eql = key_equal(),
const allocator_type& a = allocator_type());
template<container-compatible-range<value_type> R>
unordered_multimap(from_range_t, R&& rg, size_type n = see below,
const hasher& hf = hasher(), const key_equal& eql = key_equal(),
const allocator_type& a = allocator_type()); // C++23
explicit unordered_multimap(const allocator_type&);
unordered_multimap(const unordered_multimap&);
unordered_multimap(const unordered_multimap&, const Allocator&);
unordered_multimap(unordered_multimap&&)
noexcept(
is_nothrow_move_constructible<hasher>::value &&
is_nothrow_move_constructible<key_equal>::value &&
is_nothrow_move_constructible<allocator_type>::value);
unordered_multimap(unordered_multimap&&, const Allocator&);
unordered_multimap(initializer_list<value_type>, size_type n = 0,
const hasher& hf = hasher(), const key_equal& eql = key_equal(),
const allocator_type& a = allocator_type());
unordered_multimap(size_type n, const allocator_type& a)
: unordered_multimap(n, hasher(), key_equal(), a) {} // C++14
unordered_multimap(size_type n, const hasher& hf, const allocator_type& a)
: unordered_multimap(n, hf, key_equal(), a) {} // C++14
template <class InputIterator>
unordered_multimap(InputIterator f, InputIterator l, size_type n, const allocator_type& a)
: unordered_multimap(f, l, n, hasher(), key_equal(), a) {} // C++14
template <class InputIterator>
unordered_multimap(InputIterator f, InputIterator l, size_type n, const hasher& hf,
const allocator_type& a)
: unordered_multimap(f, l, n, hf, key_equal(), a) {} // C++14
template<container-compatible-range<value_type> R>
unordered_multimap(from_range_t, R&& rg, size_type n, const allocator_type& a)
: unordered_multimap(from_range, std::forward<R>(rg), n, hasher(), key_equal(), a) { } // C++23
template<container-compatible-range<value_type> R>
unordered_multimap(from_range_t, R&& rg, size_type n, const hasher& hf, const allocator_type& a)
: unordered_multimap(from_range, std::forward<R>(rg), n, hf, key_equal(), a) { } // C++23
unordered_multimap(initializer_list<value_type> il, size_type n, const allocator_type& a)
: unordered_multimap(il, n, hasher(), key_equal(), a) {} // C++14
unordered_multimap(initializer_list<value_type> il, size_type n, const hasher& hf,
const allocator_type& a)
: unordered_multimap(il, n, hf, key_equal(), a) {} // C++14
~unordered_multimap();
unordered_multimap& operator=(const unordered_multimap&);
unordered_multimap& operator=(unordered_multimap&&)
noexcept(
allocator_type::propagate_on_container_move_assignment::value &&
is_nothrow_move_assignable<allocator_type>::value &&
is_nothrow_move_assignable<hasher>::value &&
is_nothrow_move_assignable<key_equal>::value);
unordered_multimap& operator=(initializer_list<value_type>);
allocator_type get_allocator() const noexcept;
bool empty() const noexcept;
size_type size() const noexcept;
size_type max_size() const noexcept;
iterator begin() noexcept;
iterator end() noexcept;
const_iterator begin() const noexcept;
const_iterator end() const noexcept;
const_iterator cbegin() const noexcept;
const_iterator cend() const noexcept;
template <class... Args>
iterator emplace(Args&&... args);
template <class... Args>
iterator emplace_hint(const_iterator position, Args&&... args);
iterator insert(const value_type& obj);
template <class P>
iterator insert(P&& obj);
iterator insert(const_iterator hint, const value_type& obj);
template <class P>
iterator insert(const_iterator hint, P&& obj);
template <class InputIterator>
void insert(InputIterator first, InputIterator last);
template<container-compatible-range<value_type> R>
void insert_range(R&& rg); // C++23
void insert(initializer_list<value_type>);
node_type extract(const_iterator position); // C++17
node_type extract(const key_type& x); // C++17
iterator insert(node_type&& nh); // C++17
iterator insert(const_iterator hint, node_type&& nh); // C++17
iterator erase(const_iterator position);
iterator erase(iterator position); // C++14
size_type erase(const key_type& k);
iterator erase(const_iterator first, const_iterator last);
void clear() noexcept;
template<class H2, class P2>
void merge(unordered_multimap<Key, T, H2, P2, Allocator>& source); // C++17
template<class H2, class P2>
void merge(unordered_multimap<Key, T, H2, P2, Allocator>&& source); // C++17
template<class H2, class P2>
void merge(unordered_map<Key, T, H2, P2, Allocator>& source); // C++17
template<class H2, class P2>
void merge(unordered_map<Key, T, H2, P2, Allocator>&& source); // C++17
void swap(unordered_multimap&)
noexcept(
(!allocator_type::propagate_on_container_swap::value ||
__is_nothrow_swappable<allocator_type>::value) &&
__is_nothrow_swappable<hasher>::value &&
__is_nothrow_swappable<key_equal>::value);
hasher hash_function() const;
key_equal key_eq() const;
iterator find(const key_type& k);
const_iterator find(const key_type& k) const;
template<typename K>
iterator find(const K& x); // C++20
template<typename K>
const_iterator find(const K& x) const; // C++20
size_type count(const key_type& k) const;
template<typename K>
size_type count(const K& k) const; // C++20
bool contains(const key_type& k) const; // C++20
template<typename K>
bool contains(const K& k) const; // C++20
pair<iterator, iterator> equal_range(const key_type& k);
pair<const_iterator, const_iterator> equal_range(const key_type& k) const;
template<typename K>
pair<iterator, iterator> equal_range(const K& k); // C++20
template<typename K>
pair<const_iterator, const_iterator> equal_range(const K& k) const; // C++20
size_type bucket_count() const noexcept;
size_type max_bucket_count() const noexcept;
size_type bucket_size(size_type n) const;
size_type bucket(const key_type& k) const;
local_iterator begin(size_type n);
local_iterator end(size_type n);
const_local_iterator begin(size_type n) const;
const_local_iterator end(size_type n) const;
const_local_iterator cbegin(size_type n) const;
const_local_iterator cend(size_type n) const;
float load_factor() const noexcept;
float max_load_factor() const noexcept;
void max_load_factor(float z);
void rehash(size_type n);
void reserve(size_type n);
};
template<class InputIterator,
class Hash = hash<iter_key_t<InputIterator>>, class Pred = equal_to<iter_key_t<InputIterator>>,
class Allocator = allocator<iter_to_alloc_t<InputIterator>>>
unordered_multimap(InputIterator, InputIterator, typename see below::size_type = see below,
Hash = Hash(), Pred = Pred(), Allocator = Allocator())
-> unordered_multimap<iter_key_t<InputIterator>, iter_value_t<InputIterator>, Hash, Pred,
Allocator>; // C++17
template<ranges::input_range R, class Hash = hash<range-key-type<R>>,
class Pred = equal_to<range-key-type<R>>,
class Allocator = allocator<range-to-alloc-type<R>>>
unordered_multimap(from_range_t, R&&, typename see below::size_type = see below,
Hash = Hash(), Pred = Pred(), Allocator = Allocator())
-> unordered_multimap<range-key-type<R>, range-mapped-type<R>, Hash, Pred, Allocator>; // C++23
template<class Key, class T, class Hash = hash<Key>,
class Pred = equal_to<Key>, class Allocator = allocator<pair<const Key, T>>>
unordered_multimap(initializer_list<pair<const Key, T>>, typename see below::size_type = see below,
Hash = Hash(), Pred = Pred(), Allocator = Allocator())
-> unordered_multimap<Key, T, Hash, Pred, Allocator>; // C++17
template<class InputIterator, class Allocator>
unordered_multimap(InputIterator, InputIterator, typename see below::size_type, Allocator)
-> unordered_multimap<iter_key_t<InputIterator>, iter_val_t<InputIterator>,
hash<iter_key_t<InputIterator>>, equal_to<iter_key_t<InputIterator>>, Allocator>; // C++17
template<class InputIterator, class Allocator>
unordered_multimap(InputIterator, InputIterator, Allocator)
-> unordered_multimap<iter_key_t<InputIterator>, iter_val_t<InputIterator>,
hash<iter_key_t<InputIterator>>, equal_to<iter_key_t<InputIterator>>, Allocator>; // C++17
template<class InputIterator, class Hash, class Allocator>
unordered_multimap(InputIterator, InputIterator, typename see below::size_type, Hash, Allocator)
-> unordered_multimap<iter_key_t<InputIterator>, iter_val_t<InputIterator>, Hash,
equal_to<iter_key_t<InputIterator>>, Allocator>; // C++17
template<ranges::input_range R, class Allocator>
unordered_multimap(from_range_t, R&&, typename see below::size_type, Allocator)
-> unordered_multimap<range-key-type<R>, range-mapped-type<R>, hash<range-key-type<R>>,
equal_to<range-key-type<R>>, Allocator>; // C++23
template<ranges::input_range R, class Allocator>
unordered_multimap(from_range_t, R&&, Allocator)
-> unordered_multimap<range-key-type<R>, range-mapped-type<R>, hash<range-key-type<R>>,
equal_to<range-key-type<R>>, Allocator>; // C++23
template<ranges::input_range R, class Hash, class Allocator>
unordered_multimap(from_range_t, R&&, typename see below::size_type, Hash, Allocator)
-> unordered_multimap<range-key-type<R>, range-mapped-type<R>, Hash,
equal_to<range-key-type<R>>, Allocator>; // C++23
template<class Key, class T, typename Allocator>
unordered_multimap(initializer_list<pair<const Key, T>>, typename see below::size_type, Allocator)
-> unordered_multimap<Key, T, hash<Key>, equal_to<Key>, Allocator>; // C++17
template<class Key, class T, typename Allocator>
unordered_multimap(initializer_list<pair<const Key, T>>, Allocator)
-> unordered_multimap<Key, T, hash<Key>, equal_to<Key>, Allocator>; // C++17
template<class Key, class T, class Hash, class Allocator>
unordered_multimap(initializer_list<pair<const Key, T>>, typename see below::size_type, Hash,
Allocator)
-> unordered_multimap<Key, T, Hash, equal_to<Key>, Allocator>; // C++17
template <class Key, class T, class Hash, class Pred, class Alloc>
void swap(unordered_multimap<Key, T, Hash, Pred, Alloc>& x,
unordered_multimap<Key, T, Hash, Pred, Alloc>& y)
noexcept(noexcept(x.swap(y)));
template <class K, class T, class H, class P, class A, class Predicate>
typename unordered_map<K, T, H, P, A>::size_type
erase_if(unordered_map<K, T, H, P, A>& c, Predicate pred); // C++20
template <class K, class T, class H, class P, class A, class Predicate>
typename unordered_multimap<K, T, H, P, A>::size_type
erase_if(unordered_multimap<K, T, H, P, A>& c, Predicate pred); // C++20
template <class Key, class T, class Hash, class Pred, class Alloc>
bool
operator==(const unordered_multimap<Key, T, Hash, Pred, Alloc>& x,
const unordered_multimap<Key, T, Hash, Pred, Alloc>& y);
template <class Key, class T, class Hash, class Pred, class Alloc>
bool
operator!=(const unordered_multimap<Key, T, Hash, Pred, Alloc>& x,
const unordered_multimap<Key, T, Hash, Pred, Alloc>& y); // Removed in C++20
} // std
*/
#include <__algorithm/is_permutation.h>
#include <__assert>
#include <__config>
#include <__functional/is_transparent.h>
#include <__functional/operations.h>
#include <__hash_table>
#include <__iterator/distance.h>
#include <__iterator/erase_if_container.h>
#include <__iterator/iterator_traits.h>
#include <__iterator/ranges_iterator_traits.h>
#include <__memory/addressof.h>
#include <__memory/allocator.h>
#include <__memory_resource/polymorphic_allocator.h>
#include <__node_handle>
#include <__ranges/concepts.h>
#include <__ranges/container_compatible_range.h>
#include <__ranges/from_range.h>
#include <__type_traits/is_allocator.h>
#include <__type_traits/type_identity.h>
#include <__utility/forward.h>
#include <stdexcept>
#include <tuple>
#include <version>
// standard-mandated includes
// [iterator.range]
#include <__iterator/access.h>
#include <__iterator/data.h>
#include <__iterator/empty.h>
#include <__iterator/reverse_access.h>
#include <__iterator/size.h>
// [unord.map.syn]
#include <compare>
#include <initializer_list>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Key,
class _Cp,
class _Hash,
class _Pred,
bool = is_empty<_Hash>::value && !__libcpp_is_final<_Hash>::value>
class __unordered_map_hasher : private _Hash {
public:
_LIBCPP_HIDE_FROM_ABI __unordered_map_hasher() _NOEXCEPT_(is_nothrow_default_constructible<_Hash>::value) : _Hash() {}
_LIBCPP_HIDE_FROM_ABI __unordered_map_hasher(const _Hash& __h) _NOEXCEPT_(is_nothrow_copy_constructible<_Hash>::value)
: _Hash(__h) {}
_LIBCPP_HIDE_FROM_ABI const _Hash& hash_function() const _NOEXCEPT { return *this; }
_LIBCPP_HIDE_FROM_ABI size_t operator()(const _Cp& __x) const {
return static_cast<const _Hash&>(*this)(__x.__get_value().first);
}
_LIBCPP_HIDE_FROM_ABI size_t operator()(const _Key& __x) const { return static_cast<const _Hash&>(*this)(__x); }
#if _LIBCPP_STD_VER >= 20
template <typename _K2>
_LIBCPP_HIDE_FROM_ABI size_t operator()(const _K2& __x) const {
return static_cast<const _Hash&>(*this)(__x);
}
#endif
_LIBCPP_HIDE_FROM_ABI void swap(__unordered_map_hasher& __y) _NOEXCEPT_(__is_nothrow_swappable_v<_Hash>) {
using std::swap;
swap(static_cast<_Hash&>(*this), static_cast<_Hash&>(__y));
}
};
template <class _Key, class _Cp, class _Hash, class _Pred>
class __unordered_map_hasher<_Key, _Cp, _Hash, _Pred, false> {
_Hash __hash_;
public:
_LIBCPP_HIDE_FROM_ABI __unordered_map_hasher() _NOEXCEPT_(is_nothrow_default_constructible<_Hash>::value)
: __hash_() {}
_LIBCPP_HIDE_FROM_ABI __unordered_map_hasher(const _Hash& __h) _NOEXCEPT_(is_nothrow_copy_constructible<_Hash>::value)
: __hash_(__h) {}
_LIBCPP_HIDE_FROM_ABI const _Hash& hash_function() const _NOEXCEPT { return __hash_; }
_LIBCPP_HIDE_FROM_ABI size_t operator()(const _Cp& __x) const { return __hash_(__x.__get_value().first); }
_LIBCPP_HIDE_FROM_ABI size_t operator()(const _Key& __x) const { return __hash_(__x); }
#if _LIBCPP_STD_VER >= 20
template <typename _K2>
_LIBCPP_HIDE_FROM_ABI size_t operator()(const _K2& __x) const {
return __hash_(__x);
}
#endif
_LIBCPP_HIDE_FROM_ABI void swap(__unordered_map_hasher& __y) _NOEXCEPT_(__is_nothrow_swappable_v<_Hash>) {
using std::swap;
swap(__hash_, __y.__hash_);
}
};
template <class _Key, class _Cp, class _Hash, class _Pred, bool __b>
inline _LIBCPP_HIDE_FROM_ABI void
swap(__unordered_map_hasher<_Key, _Cp, _Hash, _Pred, __b>& __x,
__unordered_map_hasher<_Key, _Cp, _Hash, _Pred, __b>& __y) _NOEXCEPT_(_NOEXCEPT_(__x.swap(__y))) {
__x.swap(__y);
}
template <class _Key,
class _Cp,
class _Pred,
class _Hash,
bool = is_empty<_Pred>::value && !__libcpp_is_final<_Pred>::value>
class __unordered_map_equal : private _Pred {
public:
_LIBCPP_HIDE_FROM_ABI __unordered_map_equal() _NOEXCEPT_(is_nothrow_default_constructible<_Pred>::value) : _Pred() {}
_LIBCPP_HIDE_FROM_ABI __unordered_map_equal(const _Pred& __p) _NOEXCEPT_(is_nothrow_copy_constructible<_Pred>::value)
: _Pred(__p) {}
_LIBCPP_HIDE_FROM_ABI const _Pred& key_eq() const _NOEXCEPT { return *this; }
_LIBCPP_HIDE_FROM_ABI bool operator()(const _Cp& __x, const _Cp& __y) const {
return static_cast<const _Pred&>(*this)(__x.__get_value().first, __y.__get_value().first);
}
_LIBCPP_HIDE_FROM_ABI bool operator()(const _Cp& __x, const _Key& __y) const {
return static_cast<const _Pred&>(*this)(__x.__get_value().first, __y);
}
_LIBCPP_HIDE_FROM_ABI bool operator()(const _Key& __x, const _Cp& __y) const {
return static_cast<const _Pred&>(*this)(__x, __y.__get_value().first);
}
#if _LIBCPP_STD_VER >= 20
template <typename _K2>
_LIBCPP_HIDE_FROM_ABI bool operator()(const _Cp& __x, const _K2& __y) const {
return static_cast<const _Pred&>(*this)(__x.__get_value().first, __y);
}
template <typename _K2>
_LIBCPP_HIDE_FROM_ABI bool operator()(const _K2& __x, const _Cp& __y) const {
return static_cast<const _Pred&>(*this)(__x, __y.__get_value().first);
}
template <typename _K2>
_LIBCPP_HIDE_FROM_ABI bool operator()(const _Key& __x, const _K2& __y) const {
return static_cast<const _Pred&>(*this)(__x, __y);
}
template <typename _K2>
_LIBCPP_HIDE_FROM_ABI bool operator()(const _K2& __x, const _Key& __y) const {
return static_cast<const _Pred&>(*this)(__x, __y);
}
#endif
_LIBCPP_HIDE_FROM_ABI void swap(__unordered_map_equal& __y) _NOEXCEPT_(__is_nothrow_swappable_v<_Pred>) {
using std::swap;
swap(static_cast<_Pred&>(*this), static_cast<_Pred&>(__y));
}
};
template <class _Key, class _Cp, class _Pred, class _Hash>
class __unordered_map_equal<_Key, _Cp, _Pred, _Hash, false> {
_Pred __pred_;
public:
_LIBCPP_HIDE_FROM_ABI __unordered_map_equal() _NOEXCEPT_(is_nothrow_default_constructible<_Pred>::value)
: __pred_() {}
_LIBCPP_HIDE_FROM_ABI __unordered_map_equal(const _Pred& __p) _NOEXCEPT_(is_nothrow_copy_constructible<_Pred>::value)
: __pred_(__p) {}
_LIBCPP_HIDE_FROM_ABI const _Pred& key_eq() const _NOEXCEPT { return __pred_; }
_LIBCPP_HIDE_FROM_ABI bool operator()(const _Cp& __x, const _Cp& __y) const {
return __pred_(__x.__get_value().first, __y.__get_value().first);
}
_LIBCPP_HIDE_FROM_ABI bool operator()(const _Cp& __x, const _Key& __y) const {
return __pred_(__x.__get_value().first, __y);
}
_LIBCPP_HIDE_FROM_ABI bool operator()(const _Key& __x, const _Cp& __y) const {
return __pred_(__x, __y.__get_value().first);
}
#if _LIBCPP_STD_VER >= 20
template <typename _K2>
_LIBCPP_HIDE_FROM_ABI bool operator()(const _Cp& __x, const _K2& __y) const {
return __pred_(__x.__get_value().first, __y);
}
template <typename _K2>
_LIBCPP_HIDE_FROM_ABI bool operator()(const _K2& __x, const _Cp& __y) const {
return __pred_(__x, __y.__get_value().first);
}
template <typename _K2>
_LIBCPP_HIDE_FROM_ABI bool operator()(const _Key& __x, const _K2& __y) const {
return __pred_(__x, __y);
}
template <typename _K2>
_LIBCPP_HIDE_FROM_ABI bool operator()(const _K2& __x, const _Key& __y) const {
return __pred_(__x, __y);
}
#endif
_LIBCPP_HIDE_FROM_ABI void swap(__unordered_map_equal& __y) _NOEXCEPT_(__is_nothrow_swappable_v<_Pred>) {
using std::swap;
swap(__pred_, __y.__pred_);
}
};
template <class _Key, class _Cp, class _Pred, class _Hash, bool __b>
inline _LIBCPP_HIDE_FROM_ABI void
swap(__unordered_map_equal<_Key, _Cp, _Pred, _Hash, __b>& __x, __unordered_map_equal<_Key, _Cp, _Pred, _Hash, __b>& __y)
_NOEXCEPT_(_NOEXCEPT_(__x.swap(__y))) {
__x.swap(__y);
}
template <class _Alloc>
class __hash_map_node_destructor {
typedef _Alloc allocator_type;
typedef allocator_traits<allocator_type> __alloc_traits;
public:
typedef typename __alloc_traits::pointer pointer;
private:
allocator_type& __na_;
public:
bool __first_constructed;
bool __second_constructed;
__hash_map_node_destructor& operator=(const __hash_map_node_destructor&) = delete;
_LIBCPP_HIDE_FROM_ABI explicit __hash_map_node_destructor(allocator_type& __na) _NOEXCEPT
: __na_(__na),
__first_constructed(false),
__second_constructed(false) {}
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI __hash_map_node_destructor(__hash_node_destructor<allocator_type>&& __x) _NOEXCEPT
: __na_(__x.__na_),
__first_constructed(__x.__value_constructed),
__second_constructed(__x.__value_constructed) {
__x.__value_constructed = false;
}
#else // _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI __hash_map_node_destructor(const __hash_node_destructor<allocator_type>& __x)
: __na_(__x.__na_), __first_constructed(__x.__value_constructed), __second_constructed(__x.__value_constructed) {
const_cast<bool&>(__x.__value_constructed) = false;
}
#endif // _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI void operator()(pointer __p) _NOEXCEPT {
if (__second_constructed)
__alloc_traits::destroy(__na_, std::addressof(__p->__get_value().__get_value().second));
if (__first_constructed)
__alloc_traits::destroy(__na_, std::addressof(__p->__get_value().__get_value().first));
if (__p)
__alloc_traits::deallocate(__na_, __p, 1);
}
};
#ifndef _LIBCPP_CXX03_LANG
template <class _Key, class _Tp>
struct _LIBCPP_STANDALONE_DEBUG __hash_value_type {
typedef _Key key_type;
typedef _Tp mapped_type;
typedef pair<const key_type, mapped_type> value_type;
typedef pair<key_type&, mapped_type&> __nc_ref_pair_type;
typedef pair<key_type&&, mapped_type&&> __nc_rref_pair_type;
private:
value_type __cc_;
public:
_LIBCPP_HIDE_FROM_ABI value_type& __get_value() {
# if _LIBCPP_STD_VER >= 17
return *std::launder(std::addressof(__cc_));
# else
return __cc_;
# endif
}
_LIBCPP_HIDE_FROM_ABI const value_type& __get_value() const {
# if _LIBCPP_STD_VER >= 17
return *std::launder(std::addressof(__cc_));
# else
return __cc_;
# endif
}
_LIBCPP_HIDE_FROM_ABI __nc_ref_pair_type __ref() {
value_type& __v = __get_value();
return __nc_ref_pair_type(const_cast<key_type&>(__v.first), __v.second);
}
_LIBCPP_HIDE_FROM_ABI __nc_rref_pair_type __move() {
value_type& __v = __get_value();
return __nc_rref_pair_type(std::move(const_cast<key_type&>(__v.first)), std::move(__v.second));
}
_LIBCPP_HIDE_FROM_ABI __hash_value_type& operator=(const __hash_value_type& __v) {
__ref() = __v.__get_value();
return *this;
}
_LIBCPP_HIDE_FROM_ABI __hash_value_type& operator=(__hash_value_type&& __v) {
__ref() = __v.__move();
return *this;
}
template <class _ValueTp, __enable_if_t<__is_same_uncvref<_ValueTp, value_type>::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI __hash_value_type& operator=(_ValueTp&& __v) {
__ref() = std::forward<_ValueTp>(__v);
return *this;
}
__hash_value_type(const __hash_value_type& __v) = delete;
__hash_value_type(__hash_value_type&& __v) = delete;
template <class... _Args>
explicit __hash_value_type(_Args&&... __args) = delete;
~__hash_value_type() = delete;
};
#else
template <class _Key, class _Tp>
struct __hash_value_type {
typedef _Key key_type;
typedef _Tp mapped_type;
typedef pair<const key_type, mapped_type> value_type;
private:
value_type __cc_;
public:
_LIBCPP_HIDE_FROM_ABI value_type& __get_value() { return __cc_; }
_LIBCPP_HIDE_FROM_ABI const value_type& __get_value() const { return __cc_; }
~__hash_value_type() = delete;
};
#endif
template <class _HashIterator>
class _LIBCPP_TEMPLATE_VIS __hash_map_iterator {
_HashIterator __i_;
typedef __hash_node_types_from_iterator<_HashIterator> _NodeTypes;
public:
typedef forward_iterator_tag iterator_category;
typedef typename _NodeTypes::__map_value_type value_type;
typedef typename _NodeTypes::difference_type difference_type;
typedef value_type& reference;
typedef typename _NodeTypes::__map_value_type_pointer pointer;
_LIBCPP_HIDE_FROM_ABI __hash_map_iterator() _NOEXCEPT {}
_LIBCPP_HIDE_FROM_ABI __hash_map_iterator(_HashIterator __i) _NOEXCEPT : __i_(__i) {}
_LIBCPP_HIDE_FROM_ABI reference operator*() const { return __i_->__get_value(); }
_LIBCPP_HIDE_FROM_ABI pointer operator->() const { return pointer_traits<pointer>::pointer_to(__i_->__get_value()); }
_LIBCPP_HIDE_FROM_ABI __hash_map_iterator& operator++() {
++__i_;
return *this;
}
_LIBCPP_HIDE_FROM_ABI __hash_map_iterator operator++(int) {
__hash_map_iterator __t(*this);
++(*this);
return __t;
}
friend _LIBCPP_HIDE_FROM_ABI bool operator==(const __hash_map_iterator& __x, const __hash_map_iterator& __y) {
return __x.__i_ == __y.__i_;
}
#if _LIBCPP_STD_VER <= 17
friend _LIBCPP_HIDE_FROM_ABI bool operator!=(const __hash_map_iterator& __x, const __hash_map_iterator& __y) {
return __x.__i_ != __y.__i_;
}
#endif
template <class, class, class, class, class>
friend class _LIBCPP_TEMPLATE_VIS unordered_map;
template <class, class, class, class, class>
friend class _LIBCPP_TEMPLATE_VIS unordered_multimap;
template <class>
friend class _LIBCPP_TEMPLATE_VIS __hash_const_iterator;
template <class>
friend class _LIBCPP_TEMPLATE_VIS __hash_const_local_iterator;
template <class>
friend class _LIBCPP_TEMPLATE_VIS __hash_map_const_iterator;
};
template <class _HashIterator>
class _LIBCPP_TEMPLATE_VIS __hash_map_const_iterator {
_HashIterator __i_;
typedef __hash_node_types_from_iterator<_HashIterator> _NodeTypes;
public:
typedef forward_iterator_tag iterator_category;
typedef typename _NodeTypes::__map_value_type value_type;
typedef typename _NodeTypes::difference_type difference_type;
typedef const value_type& reference;
typedef typename _NodeTypes::__const_map_value_type_pointer pointer;
_LIBCPP_HIDE_FROM_ABI __hash_map_const_iterator() _NOEXCEPT {}
_LIBCPP_HIDE_FROM_ABI __hash_map_const_iterator(_HashIterator __i) _NOEXCEPT : __i_(__i) {}
_LIBCPP_HIDE_FROM_ABI
__hash_map_const_iterator(__hash_map_iterator<typename _HashIterator::__non_const_iterator> __i) _NOEXCEPT
: __i_(__i.__i_) {}
_LIBCPP_HIDE_FROM_ABI reference operator*() const { return __i_->__get_value(); }
_LIBCPP_HIDE_FROM_ABI pointer operator->() const { return pointer_traits<pointer>::pointer_to(__i_->__get_value()); }
_LIBCPP_HIDE_FROM_ABI __hash_map_const_iterator& operator++() {
++__i_;
return *this;
}
_LIBCPP_HIDE_FROM_ABI __hash_map_const_iterator operator++(int) {
__hash_map_const_iterator __t(*this);
++(*this);
return __t;
}
friend _LIBCPP_HIDE_FROM_ABI bool
operator==(const __hash_map_const_iterator& __x, const __hash_map_const_iterator& __y) {
return __x.__i_ == __y.__i_;
}
#if _LIBCPP_STD_VER <= 17
friend _LIBCPP_HIDE_FROM_ABI bool
operator!=(const __hash_map_const_iterator& __x, const __hash_map_const_iterator& __y) {
return __x.__i_ != __y.__i_;
}
#endif
template <class, class, class, class, class>
friend class _LIBCPP_TEMPLATE_VIS unordered_map;
template <class, class, class, class, class>
friend class _LIBCPP_TEMPLATE_VIS unordered_multimap;
template <class>
friend class _LIBCPP_TEMPLATE_VIS __hash_const_iterator;
template <class>
friend class _LIBCPP_TEMPLATE_VIS __hash_const_local_iterator;
};
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
class unordered_multimap;
template <class _Key,
class _Tp,
class _Hash = hash<_Key>,
class _Pred = equal_to<_Key>,
class _Alloc = allocator<pair<const _Key, _Tp> > >
class _LIBCPP_TEMPLATE_VIS unordered_map {
public:
// types
typedef _Key key_type;
typedef _Tp mapped_type;
typedef __type_identity_t<_Hash> hasher;
typedef __type_identity_t<_Pred> key_equal;
typedef __type_identity_t<_Alloc> allocator_type;
typedef pair<const key_type, mapped_type> value_type;
typedef value_type& reference;
typedef const value_type& const_reference;
static_assert(is_same<value_type, typename allocator_type::value_type>::value,
"Allocator::value_type must be same type as value_type");
private:
typedef __hash_value_type<key_type, mapped_type> __value_type;
typedef __unordered_map_hasher<key_type, __value_type, hasher, key_equal> __hasher;
typedef __unordered_map_equal<key_type, __value_type, key_equal, hasher> __key_equal;
typedef __rebind_alloc<allocator_traits<allocator_type>, __value_type> __allocator_type;
typedef __hash_table<__value_type, __hasher, __key_equal, __allocator_type> __table;
__table __table_;
typedef typename __table::_NodeTypes _NodeTypes;
typedef typename __table::__node_pointer __node_pointer;
typedef typename __table::__node_const_pointer __node_const_pointer;
typedef typename __table::__node_traits __node_traits;
typedef typename __table::__node_allocator __node_allocator;
typedef typename __table::__node __node;
typedef __hash_map_node_destructor<__node_allocator> _Dp;
typedef unique_ptr<__node, _Dp> __node_holder;
typedef allocator_traits<allocator_type> __alloc_traits;
static_assert(__check_valid_allocator<allocator_type>::value, "");
static_assert(is_same<typename __table::__container_value_type, value_type>::value, "");
static_assert(is_same<typename __table::__node_value_type, __value_type>::value, "");
public:
typedef typename __alloc_traits::pointer pointer;
typedef typename __alloc_traits::const_pointer const_pointer;
typedef typename __table::size_type size_type;
typedef typename __table::difference_type difference_type;
typedef __hash_map_iterator<typename __table::iterator> iterator;
typedef __hash_map_const_iterator<typename __table::const_iterator> const_iterator;
typedef __hash_map_iterator<typename __table::local_iterator> local_iterator;
typedef __hash_map_const_iterator<typename __table::const_local_iterator> const_local_iterator;
#if _LIBCPP_STD_VER >= 17
typedef __map_node_handle<__node, allocator_type> node_type;
typedef __insert_return_type<iterator, node_type> insert_return_type;
#endif
template <class _Key2, class _Tp2, class _Hash2, class _Pred2, class _Alloc2>
friend class _LIBCPP_TEMPLATE_VIS unordered_map;
template <class _Key2, class _Tp2, class _Hash2, class _Pred2, class _Alloc2>
friend class _LIBCPP_TEMPLATE_VIS unordered_multimap;
_LIBCPP_HIDE_FROM_ABI unordered_map() _NOEXCEPT_(is_nothrow_default_constructible<__table>::value) {}
explicit _LIBCPP_HIDE_FROM_ABI
unordered_map(size_type __n, const hasher& __hf = hasher(), const key_equal& __eql = key_equal());
_LIBCPP_HIDE_FROM_ABI
unordered_map(size_type __n, const hasher& __hf, const key_equal& __eql, const allocator_type& __a);
template <class _InputIterator>
_LIBCPP_HIDE_FROM_ABI unordered_map(_InputIterator __first, _InputIterator __last);
template <class _InputIterator>
_LIBCPP_HIDE_FROM_ABI
unordered_map(_InputIterator __first,
_InputIterator __last,
size_type __n,
const hasher& __hf = hasher(),
const key_equal& __eql = key_equal());
template <class _InputIterator>
_LIBCPP_HIDE_FROM_ABI unordered_map(
_InputIterator __first,
_InputIterator __last,
size_type __n,
const hasher& __hf,
const key_equal& __eql,
const allocator_type& __a);
#if _LIBCPP_STD_VER >= 23
template <_ContainerCompatibleRange<value_type> _Range>
_LIBCPP_HIDE_FROM_ABI unordered_map(
from_range_t,
_Range&& __range,
size_type __n = /*implementation-defined*/ 0,
const hasher& __hf = hasher(),
const key_equal& __eql = key_equal(),
const allocator_type& __a = allocator_type())
: __table_(__hf, __eql, typename __table::allocator_type(__a)) {
if (__n > 0) {
__table_.__rehash_unique(__n);
}
insert_range(std::forward<_Range>(__range));
}
#endif
_LIBCPP_HIDE_FROM_ABI explicit unordered_map(const allocator_type& __a);
_LIBCPP_HIDE_FROM_ABI unordered_map(const unordered_map& __u);
_LIBCPP_HIDE_FROM_ABI unordered_map(const unordered_map& __u, const allocator_type& __a);
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI unordered_map(unordered_map&& __u) _NOEXCEPT_(is_nothrow_move_constructible<__table>::value);
_LIBCPP_HIDE_FROM_ABI unordered_map(unordered_map&& __u, const allocator_type& __a);
_LIBCPP_HIDE_FROM_ABI unordered_map(initializer_list<value_type> __il);
_LIBCPP_HIDE_FROM_ABI
unordered_map(initializer_list<value_type> __il,
size_type __n,
const hasher& __hf = hasher(),
const key_equal& __eql = key_equal());
_LIBCPP_HIDE_FROM_ABI unordered_map(
initializer_list<value_type> __il,
size_type __n,
const hasher& __hf,
const key_equal& __eql,
const allocator_type& __a);
#endif // _LIBCPP_CXX03_LANG
#if _LIBCPP_STD_VER >= 14
_LIBCPP_HIDE_FROM_ABI unordered_map(size_type __n, const allocator_type& __a)
: unordered_map(__n, hasher(), key_equal(), __a) {}
_LIBCPP_HIDE_FROM_ABI unordered_map(size_type __n, const hasher& __hf, const allocator_type& __a)
: unordered_map(__n, __hf, key_equal(), __a) {}
template <class _InputIterator>
_LIBCPP_HIDE_FROM_ABI
unordered_map(_InputIterator __first, _InputIterator __last, size_type __n, const allocator_type& __a)
: unordered_map(__first, __last, __n, hasher(), key_equal(), __a) {}
template <class _InputIterator>
_LIBCPP_HIDE_FROM_ABI unordered_map(
_InputIterator __first, _InputIterator __last, size_type __n, const hasher& __hf, const allocator_type& __a)
: unordered_map(__first, __last, __n, __hf, key_equal(), __a) {}
# if _LIBCPP_STD_VER >= 23
template <_ContainerCompatibleRange<value_type> _Range>
_LIBCPP_HIDE_FROM_ABI unordered_map(from_range_t, _Range&& __range, size_type __n, const allocator_type& __a)
: unordered_map(from_range, std::forward<_Range>(__range), __n, hasher(), key_equal(), __a) {}
template <_ContainerCompatibleRange<value_type> _Range>
_LIBCPP_HIDE_FROM_ABI
unordered_map(from_range_t, _Range&& __range, size_type __n, const hasher& __hf, const allocator_type& __a)
: unordered_map(from_range, std::forward<_Range>(__range), __n, __hf, key_equal(), __a) {}
# endif
_LIBCPP_HIDE_FROM_ABI unordered_map(initializer_list<value_type> __il, size_type __n, const allocator_type& __a)
: unordered_map(__il, __n, hasher(), key_equal(), __a) {}
_LIBCPP_HIDE_FROM_ABI
unordered_map(initializer_list<value_type> __il, size_type __n, const hasher& __hf, const allocator_type& __a)
: unordered_map(__il, __n, __hf, key_equal(), __a) {}
#endif
_LIBCPP_HIDE_FROM_ABI ~unordered_map() {
static_assert(sizeof(std::__diagnose_unordered_container_requirements<_Key, _Hash, _Pred>(0)), "");
}
_LIBCPP_HIDE_FROM_ABI unordered_map& operator=(const unordered_map& __u) {
#ifndef _LIBCPP_CXX03_LANG
__table_ = __u.__table_;
#else
if (this != std::addressof(__u)) {
__table_.clear();
__table_.hash_function() = __u.__table_.hash_function();
__table_.key_eq() = __u.__table_.key_eq();
__table_.max_load_factor() = __u.__table_.max_load_factor();
__table_.__copy_assign_alloc(__u.__table_);
insert(__u.begin(), __u.end());
}
#endif
return *this;
}
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI unordered_map& operator=(unordered_map&& __u)
_NOEXCEPT_(is_nothrow_move_assignable<__table>::value);
_LIBCPP_HIDE_FROM_ABI unordered_map& operator=(initializer_list<value_type> __il);
#endif // _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI allocator_type get_allocator() const _NOEXCEPT {
return allocator_type(__table_.__node_alloc());
}
_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI bool empty() const _NOEXCEPT { return __table_.size() == 0; }
_LIBCPP_HIDE_FROM_ABI size_type size() const _NOEXCEPT { return __table_.size(); }
_LIBCPP_HIDE_FROM_ABI size_type max_size() const _NOEXCEPT { return __table_.max_size(); }
_LIBCPP_HIDE_FROM_ABI iterator begin() _NOEXCEPT { return __table_.begin(); }
_LIBCPP_HIDE_FROM_ABI iterator end() _NOEXCEPT { return __table_.end(); }
_LIBCPP_HIDE_FROM_ABI const_iterator begin() const _NOEXCEPT { return __table_.begin(); }
_LIBCPP_HIDE_FROM_ABI const_iterator end() const _NOEXCEPT { return __table_.end(); }
_LIBCPP_HIDE_FROM_ABI const_iterator cbegin() const _NOEXCEPT { return __table_.begin(); }
_LIBCPP_HIDE_FROM_ABI const_iterator cend() const _NOEXCEPT { return __table_.end(); }
_LIBCPP_HIDE_FROM_ABI pair<iterator, bool> insert(const value_type& __x) { return __table_.__insert_unique(__x); }
_LIBCPP_HIDE_FROM_ABI iterator insert(const_iterator, const value_type& __x) { return insert(__x).first; }
template <class _InputIterator>
_LIBCPP_HIDE_FROM_ABI void insert(_InputIterator __first, _InputIterator __last);
#if _LIBCPP_STD_VER >= 23
template <_ContainerCompatibleRange<value_type> _Range>
_LIBCPP_HIDE_FROM_ABI void insert_range(_Range&& __range) {
for (auto&& __element : __range) {
__table_.__insert_unique(std::forward<decltype(__element)>(__element));
}
}
#endif
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI void insert(initializer_list<value_type> __il) { insert(__il.begin(), __il.end()); }
_LIBCPP_HIDE_FROM_ABI pair<iterator, bool> insert(value_type&& __x) {
return __table_.__insert_unique(std::move(__x));
}
_LIBCPP_HIDE_FROM_ABI iterator insert(const_iterator, value_type&& __x) {
return __table_.__insert_unique(std::move(__x)).first;
}
template <class _Pp, __enable_if_t<is_constructible<value_type, _Pp>::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI pair<iterator, bool> insert(_Pp&& __x) {
return __table_.__insert_unique(std::forward<_Pp>(__x));
}
template <class _Pp, __enable_if_t<is_constructible<value_type, _Pp>::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI iterator insert(const_iterator, _Pp&& __x) {
return insert(std::forward<_Pp>(__x)).first;
}
template <class... _Args>
_LIBCPP_HIDE_FROM_ABI pair<iterator, bool> emplace(_Args&&... __args) {
return __table_.__emplace_unique(std::forward<_Args>(__args)...);
}
template <class... _Args>
_LIBCPP_HIDE_FROM_ABI iterator emplace_hint(const_iterator, _Args&&... __args) {
return __table_.__emplace_unique(std::forward<_Args>(__args)...).first;
}
#endif // _LIBCPP_CXX03_LANG
#if _LIBCPP_STD_VER >= 17
template <class... _Args>
_LIBCPP_HIDE_FROM_ABI pair<iterator, bool> try_emplace(const key_type& __k, _Args&&... __args) {
return __table_.__emplace_unique_key_args(
__k, piecewise_construct, std::forward_as_tuple(__k), std::forward_as_tuple(std::forward<_Args>(__args)...));
}
template <class... _Args>
_LIBCPP_HIDE_FROM_ABI pair<iterator, bool> try_emplace(key_type&& __k, _Args&&... __args) {
return __table_.__emplace_unique_key_args(
__k,
piecewise_construct,
std::forward_as_tuple(std::move(__k)),
std::forward_as_tuple(std::forward<_Args>(__args)...));
}
template <class... _Args>
_LIBCPP_HIDE_FROM_ABI iterator try_emplace(const_iterator, const key_type& __k, _Args&&... __args) {
return try_emplace(__k, std::forward<_Args>(__args)...).first;
}
template <class... _Args>
_LIBCPP_HIDE_FROM_ABI iterator try_emplace(const_iterator, key_type&& __k, _Args&&... __args) {
return try_emplace(std::move(__k), std::forward<_Args>(__args)...).first;
}
template <class _Vp>
_LIBCPP_HIDE_FROM_ABI pair<iterator, bool> insert_or_assign(const key_type& __k, _Vp&& __v) {
pair<iterator, bool> __res = __table_.__emplace_unique_key_args(__k, __k, std::forward<_Vp>(__v));
if (!__res.second) {
__res.first->second = std::forward<_Vp>(__v);
}
return __res;
}
template <class _Vp>
_LIBCPP_HIDE_FROM_ABI pair<iterator, bool> insert_or_assign(key_type&& __k, _Vp&& __v) {
pair<iterator, bool> __res = __table_.__emplace_unique_key_args(__k, std::move(__k), std::forward<_Vp>(__v));
if (!__res.second) {
__res.first->second = std::forward<_Vp>(__v);
}
return __res;
}
template <class _Vp>
_LIBCPP_HIDE_FROM_ABI iterator insert_or_assign(const_iterator, const key_type& __k, _Vp&& __v) {
return insert_or_assign(__k, std::forward<_Vp>(__v)).first;
}
template <class _Vp>
_LIBCPP_HIDE_FROM_ABI iterator insert_or_assign(const_iterator, key_type&& __k, _Vp&& __v) {
return insert_or_assign(std::move(__k), std::forward<_Vp>(__v)).first;
}
#endif // _LIBCPP_STD_VER >= 17
_LIBCPP_HIDE_FROM_ABI iterator erase(const_iterator __p) { return __table_.erase(__p.__i_); }
_LIBCPP_HIDE_FROM_ABI iterator erase(iterator __p) { return __table_.erase(__p.__i_); }
_LIBCPP_HIDE_FROM_ABI size_type erase(const key_type& __k) { return __table_.__erase_unique(__k); }
_LIBCPP_HIDE_FROM_ABI iterator erase(const_iterator __first, const_iterator __last) {
return __table_.erase(__first.__i_, __last.__i_);
}
_LIBCPP_HIDE_FROM_ABI void clear() _NOEXCEPT { __table_.clear(); }
#if _LIBCPP_STD_VER >= 17
_LIBCPP_HIDE_FROM_ABI insert_return_type insert(node_type&& __nh) {
_LIBCPP_ASSERT_COMPATIBLE_ALLOCATOR(__nh.empty() || __nh.get_allocator() == get_allocator(),
"node_type with incompatible allocator passed to unordered_map::insert()");
return __table_.template __node_handle_insert_unique< node_type, insert_return_type>(std::move(__nh));
}
_LIBCPP_HIDE_FROM_ABI iterator insert(const_iterator __hint, node_type&& __nh) {
_LIBCPP_ASSERT_COMPATIBLE_ALLOCATOR(__nh.empty() || __nh.get_allocator() == get_allocator(),
"node_type with incompatible allocator passed to unordered_map::insert()");
return __table_.template __node_handle_insert_unique<node_type>(__hint.__i_, std::move(__nh));
}
_LIBCPP_HIDE_FROM_ABI node_type extract(key_type const& __key) {
return __table_.template __node_handle_extract<node_type>(__key);
}
_LIBCPP_HIDE_FROM_ABI node_type extract(const_iterator __it) {
return __table_.template __node_handle_extract<node_type>(__it.__i_);
}
template <class _H2, class _P2>
_LIBCPP_HIDE_FROM_ABI void merge(unordered_map<key_type, mapped_type, _H2, _P2, allocator_type>& __source) {
_LIBCPP_ASSERT_COMPATIBLE_ALLOCATOR(
__source.get_allocator() == get_allocator(), "merging container with incompatible allocator");
return __table_.__node_handle_merge_unique(__source.__table_);
}
template <class _H2, class _P2>
_LIBCPP_HIDE_FROM_ABI void merge(unordered_map<key_type, mapped_type, _H2, _P2, allocator_type>&& __source) {
_LIBCPP_ASSERT_COMPATIBLE_ALLOCATOR(
__source.get_allocator() == get_allocator(), "merging container with incompatible allocator");
return __table_.__node_handle_merge_unique(__source.__table_);
}
template <class _H2, class _P2>
_LIBCPP_HIDE_FROM_ABI void merge(unordered_multimap<key_type, mapped_type, _H2, _P2, allocator_type>& __source) {
_LIBCPP_ASSERT_COMPATIBLE_ALLOCATOR(
__source.get_allocator() == get_allocator(), "merging container with incompatible allocator");
return __table_.__node_handle_merge_unique(__source.__table_);
}
template <class _H2, class _P2>
_LIBCPP_HIDE_FROM_ABI void merge(unordered_multimap<key_type, mapped_type, _H2, _P2, allocator_type>&& __source) {
_LIBCPP_ASSERT_COMPATIBLE_ALLOCATOR(
__source.get_allocator() == get_allocator(), "merging container with incompatible allocator");
return __table_.__node_handle_merge_unique(__source.__table_);
}
#endif
_LIBCPP_HIDE_FROM_ABI void swap(unordered_map& __u) _NOEXCEPT_(__is_nothrow_swappable_v<__table>) {
__table_.swap(__u.__table_);
}
_LIBCPP_HIDE_FROM_ABI hasher hash_function() const { return __table_.hash_function().hash_function(); }
_LIBCPP_HIDE_FROM_ABI key_equal key_eq() const { return __table_.key_eq().key_eq(); }
_LIBCPP_HIDE_FROM_ABI iterator find(const key_type& __k) { return __table_.find(__k); }
_LIBCPP_HIDE_FROM_ABI const_iterator find(const key_type& __k) const { return __table_.find(__k); }
#if _LIBCPP_STD_VER >= 20
template <class _K2, enable_if_t<__is_transparent_v<hasher, _K2> && __is_transparent_v<key_equal, _K2>>* = nullptr>
_LIBCPP_HIDE_FROM_ABI iterator find(const _K2& __k) {
return __table_.find(__k);
}
template <class _K2, enable_if_t<__is_transparent_v<hasher, _K2> && __is_transparent_v<key_equal, _K2>>* = nullptr>
_LIBCPP_HIDE_FROM_ABI const_iterator find(const _K2& __k) const {
return __table_.find(__k);
}
#endif // _LIBCPP_STD_VER >= 20
_LIBCPP_HIDE_FROM_ABI size_type count(const key_type& __k) const { return __table_.__count_unique(__k); }
#if _LIBCPP_STD_VER >= 20
template <class _K2, enable_if_t<__is_transparent_v<hasher, _K2> && __is_transparent_v<key_equal, _K2>>* = nullptr>
_LIBCPP_HIDE_FROM_ABI size_type count(const _K2& __k) const {
return __table_.__count_unique(__k);
}
#endif // _LIBCPP_STD_VER >= 20
#if _LIBCPP_STD_VER >= 20
_LIBCPP_HIDE_FROM_ABI bool contains(const key_type& __k) const { return find(__k) != end(); }
template <class _K2, enable_if_t<__is_transparent_v<hasher, _K2> && __is_transparent_v<key_equal, _K2>>* = nullptr>
_LIBCPP_HIDE_FROM_ABI bool contains(const _K2& __k) const {
return find(__k) != end();
}
#endif // _LIBCPP_STD_VER >= 20
_LIBCPP_HIDE_FROM_ABI pair<iterator, iterator> equal_range(const key_type& __k) {
return __table_.__equal_range_unique(__k);
}
_LIBCPP_HIDE_FROM_ABI pair<const_iterator, const_iterator> equal_range(const key_type& __k) const {
return __table_.__equal_range_unique(__k);
}
#if _LIBCPP_STD_VER >= 20
template <class _K2, enable_if_t<__is_transparent_v<hasher, _K2> && __is_transparent_v<key_equal, _K2>>* = nullptr>
_LIBCPP_HIDE_FROM_ABI pair<iterator, iterator> equal_range(const _K2& __k) {
return __table_.__equal_range_unique(__k);
}
template <class _K2, enable_if_t<__is_transparent_v<hasher, _K2> && __is_transparent_v<key_equal, _K2>>* = nullptr>
_LIBCPP_HIDE_FROM_ABI pair<const_iterator, const_iterator> equal_range(const _K2& __k) const {
return __table_.__equal_range_unique(__k);
}
#endif // _LIBCPP_STD_VER >= 20
_LIBCPP_HIDE_FROM_ABI mapped_type& operator[](const key_type& __k);
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI mapped_type& operator[](key_type&& __k);
#endif
_LIBCPP_HIDE_FROM_ABI mapped_type& at(const key_type& __k);
_LIBCPP_HIDE_FROM_ABI const mapped_type& at(const key_type& __k) const;
_LIBCPP_HIDE_FROM_ABI size_type bucket_count() const _NOEXCEPT { return __table_.bucket_count(); }
_LIBCPP_HIDE_FROM_ABI size_type max_bucket_count() const _NOEXCEPT { return __table_.max_bucket_count(); }
_LIBCPP_HIDE_FROM_ABI size_type bucket_size(size_type __n) const { return __table_.bucket_size(__n); }
_LIBCPP_HIDE_FROM_ABI size_type bucket(const key_type& __k) const { return __table_.bucket(__k); }
_LIBCPP_HIDE_FROM_ABI local_iterator begin(size_type __n) { return __table_.begin(__n); }
_LIBCPP_HIDE_FROM_ABI local_iterator end(size_type __n) { return __table_.end(__n); }
_LIBCPP_HIDE_FROM_ABI const_local_iterator begin(size_type __n) const { return __table_.cbegin(__n); }
_LIBCPP_HIDE_FROM_ABI const_local_iterator end(size_type __n) const { return __table_.cend(__n); }
_LIBCPP_HIDE_FROM_ABI const_local_iterator cbegin(size_type __n) const { return __table_.cbegin(__n); }
_LIBCPP_HIDE_FROM_ABI const_local_iterator cend(size_type __n) const { return __table_.cend(__n); }
_LIBCPP_HIDE_FROM_ABI float load_factor() const _NOEXCEPT { return __table_.load_factor(); }
_LIBCPP_HIDE_FROM_ABI float max_load_factor() const _NOEXCEPT { return __table_.max_load_factor(); }
_LIBCPP_HIDE_FROM_ABI void max_load_factor(float __mlf) { __table_.max_load_factor(__mlf); }
_LIBCPP_HIDE_FROM_ABI void rehash(size_type __n) { __table_.__rehash_unique(__n); }
_LIBCPP_HIDE_FROM_ABI void reserve(size_type __n) { __table_.__reserve_unique(__n); }
private:
#ifdef _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI __node_holder __construct_node_with_key(const key_type& __k);
#endif
};
#if _LIBCPP_STD_VER >= 17
template <class _InputIterator,
class _Hash = hash<__iter_key_type<_InputIterator>>,
class _Pred = equal_to<__iter_key_type<_InputIterator>>,
class _Allocator = allocator<__iter_to_alloc_type<_InputIterator>>,
class = enable_if_t<__has_input_iterator_category<_InputIterator>::value>,
class = enable_if_t<!__is_allocator<_Hash>::value>,
class = enable_if_t<!is_integral<_Hash>::value>,
class = enable_if_t<!__is_allocator<_Pred>::value>,
class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_map(_InputIterator,
_InputIterator,
typename allocator_traits<_Allocator>::size_type = 0,
_Hash = _Hash(),
_Pred = _Pred(),
_Allocator = _Allocator())
-> unordered_map<__iter_key_type<_InputIterator>, __iter_mapped_type<_InputIterator>, _Hash, _Pred, _Allocator>;
# if _LIBCPP_STD_VER >= 23
template <ranges::input_range _Range,
class _Hash = hash<__range_key_type<_Range>>,
class _Pred = equal_to<__range_key_type<_Range>>,
class _Allocator = allocator<__range_to_alloc_type<_Range>>,
class = enable_if_t<!__is_allocator<_Hash>::value>,
class = enable_if_t<!is_integral<_Hash>::value>,
class = enable_if_t<!__is_allocator<_Pred>::value>,
class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_map(from_range_t,
_Range&&,
typename allocator_traits<_Allocator>::size_type = 0,
_Hash = _Hash(),
_Pred = _Pred(),
_Allocator = _Allocator())
-> unordered_map<__range_key_type<_Range>, __range_mapped_type<_Range>, _Hash, _Pred, _Allocator>; // C++23
# endif
template <class _Key,
class _Tp,
class _Hash = hash<remove_const_t<_Key>>,
class _Pred = equal_to<remove_const_t<_Key>>,
class _Allocator = allocator<pair<const _Key, _Tp>>,
class = enable_if_t<!__is_allocator<_Hash>::value>,
class = enable_if_t<!is_integral<_Hash>::value>,
class = enable_if_t<!__is_allocator<_Pred>::value>,
class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_map(initializer_list<pair<_Key, _Tp>>,
typename allocator_traits<_Allocator>::size_type = 0,
_Hash = _Hash(),
_Pred = _Pred(),
_Allocator = _Allocator()) -> unordered_map<remove_const_t<_Key>, _Tp, _Hash, _Pred, _Allocator>;
template <class _InputIterator,
class _Allocator,
class = enable_if_t<__has_input_iterator_category<_InputIterator>::value>,
class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_map(_InputIterator, _InputIterator, typename allocator_traits<_Allocator>::size_type, _Allocator)
-> unordered_map<__iter_key_type<_InputIterator>,
__iter_mapped_type<_InputIterator>,
hash<__iter_key_type<_InputIterator>>,
equal_to<__iter_key_type<_InputIterator>>,
_Allocator>;
template <class _InputIterator,
class _Allocator,
class = enable_if_t<__has_input_iterator_category<_InputIterator>::value>,
class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_map(_InputIterator, _InputIterator, _Allocator)
-> unordered_map<__iter_key_type<_InputIterator>,
__iter_mapped_type<_InputIterator>,
hash<__iter_key_type<_InputIterator>>,
equal_to<__iter_key_type<_InputIterator>>,
_Allocator>;
template <class _InputIterator,
class _Hash,
class _Allocator,
class = enable_if_t<__has_input_iterator_category<_InputIterator>::value>,
class = enable_if_t<!__is_allocator<_Hash>::value>,
class = enable_if_t<!is_integral<_Hash>::value>,
class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_map(_InputIterator, _InputIterator, typename allocator_traits<_Allocator>::size_type, _Hash, _Allocator)
-> unordered_map<__iter_key_type<_InputIterator>,
__iter_mapped_type<_InputIterator>,
_Hash,
equal_to<__iter_key_type<_InputIterator>>,
_Allocator>;
# if _LIBCPP_STD_VER >= 23
template <ranges::input_range _Range, class _Allocator, class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_map(from_range_t, _Range&&, typename allocator_traits<_Allocator>::size_type, _Allocator)
-> unordered_map<__range_key_type<_Range>,
__range_mapped_type<_Range>,
hash<__range_key_type<_Range>>,
equal_to<__range_key_type<_Range>>,
_Allocator>;
template <ranges::input_range _Range, class _Allocator, class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_map(from_range_t, _Range&&, _Allocator)
-> unordered_map<__range_key_type<_Range>,
__range_mapped_type<_Range>,
hash<__range_key_type<_Range>>,
equal_to<__range_key_type<_Range>>,
_Allocator>;
template <ranges::input_range _Range,
class _Hash,
class _Allocator,
class = enable_if_t<!__is_allocator<_Hash>::value>,
class = enable_if_t<!is_integral<_Hash>::value>,
class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_map(from_range_t, _Range&&, typename allocator_traits<_Allocator>::size_type, _Hash, _Allocator)
-> unordered_map<__range_key_type<_Range>,
__range_mapped_type<_Range>,
_Hash,
equal_to<__range_key_type<_Range>>,
_Allocator>;
# endif
template <class _Key, class _Tp, class _Allocator, class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_map(initializer_list<pair<_Key, _Tp>>, typename allocator_traits<_Allocator>::size_type, _Allocator)
-> unordered_map<remove_const_t<_Key>, _Tp, hash<remove_const_t<_Key>>, equal_to<remove_const_t<_Key>>, _Allocator>;
template <class _Key, class _Tp, class _Allocator, class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_map(initializer_list<pair<_Key, _Tp>>, _Allocator)
-> unordered_map<remove_const_t<_Key>, _Tp, hash<remove_const_t<_Key>>, equal_to<remove_const_t<_Key>>, _Allocator>;
template <class _Key,
class _Tp,
class _Hash,
class _Allocator,
class = enable_if_t<!__is_allocator<_Hash>::value>,
class = enable_if_t<!is_integral<_Hash>::value>,
class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_map(initializer_list<pair<_Key, _Tp>>, typename allocator_traits<_Allocator>::size_type, _Hash, _Allocator)
-> unordered_map<remove_const_t<_Key>, _Tp, _Hash, equal_to<remove_const_t<_Key>>, _Allocator>;
#endif
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(size_type __n, const hasher& __hf, const key_equal& __eql)
: __table_(__hf, __eql) {
__table_.__rehash_unique(__n);
}
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
size_type __n, const hasher& __hf, const key_equal& __eql, const allocator_type& __a)
: __table_(__hf, __eql, typename __table::allocator_type(__a)) {
__table_.__rehash_unique(__n);
}
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
inline unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(const allocator_type& __a)
: __table_(typename __table::allocator_type(__a)) {}
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class _InputIterator>
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(_InputIterator __first, _InputIterator __last) {
insert(__first, __last);
}
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class _InputIterator>
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
_InputIterator __first, _InputIterator __last, size_type __n, const hasher& __hf, const key_equal& __eql)
: __table_(__hf, __eql) {
__table_.__rehash_unique(__n);
insert(__first, __last);
}
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class _InputIterator>
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
_InputIterator __first,
_InputIterator __last,
size_type __n,
const hasher& __hf,
const key_equal& __eql,
const allocator_type& __a)
: __table_(__hf, __eql, typename __table::allocator_type(__a)) {
__table_.__rehash_unique(__n);
insert(__first, __last);
}
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(const unordered_map& __u) : __table_(__u.__table_) {
__table_.__rehash_unique(__u.bucket_count());
insert(__u.begin(), __u.end());
}
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(const unordered_map& __u, const allocator_type& __a)
: __table_(__u.__table_, typename __table::allocator_type(__a)) {
__table_.__rehash_unique(__u.bucket_count());
insert(__u.begin(), __u.end());
}
#ifndef _LIBCPP_CXX03_LANG
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
inline unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(unordered_map&& __u)
_NOEXCEPT_(is_nothrow_move_constructible<__table>::value)
: __table_(std::move(__u.__table_)) {}
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(unordered_map&& __u, const allocator_type& __a)
: __table_(std::move(__u.__table_), typename __table::allocator_type(__a)) {
if (__a != __u.get_allocator()) {
iterator __i = __u.begin();
while (__u.size() != 0) {
__table_.__emplace_unique(__u.__table_.remove((__i++).__i_)->__get_value().__move());
}
}
}
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(initializer_list<value_type> __il) {
insert(__il.begin(), __il.end());
}
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
initializer_list<value_type> __il, size_type __n, const hasher& __hf, const key_equal& __eql)
: __table_(__hf, __eql) {
__table_.__rehash_unique(__n);
insert(__il.begin(), __il.end());
}
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
initializer_list<value_type> __il,
size_type __n,
const hasher& __hf,
const key_equal& __eql,
const allocator_type& __a)
: __table_(__hf, __eql, typename __table::allocator_type(__a)) {
__table_.__rehash_unique(__n);
insert(__il.begin(), __il.end());
}
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
inline unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>&
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::operator=(unordered_map&& __u)
_NOEXCEPT_(is_nothrow_move_assignable<__table>::value) {
__table_ = std::move(__u.__table_);
return *this;
}
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
inline unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>&
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::operator=(initializer_list<value_type> __il) {
__table_.__assign_unique(__il.begin(), __il.end());
return *this;
}
#endif // _LIBCPP_CXX03_LANG
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class _InputIterator>
inline void unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::insert(_InputIterator __first, _InputIterator __last) {
for (; __first != __last; ++__first)
__table_.__insert_unique(*__first);
}
#ifndef _LIBCPP_CXX03_LANG
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
_Tp& unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::operator[](const key_type& __k) {
return __table_
.__emplace_unique_key_args(__k, piecewise_construct, std::forward_as_tuple(__k), std::forward_as_tuple())
.first->__get_value()
.second;
}
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
_Tp& unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::operator[](key_type&& __k) {
return __table_
.__emplace_unique_key_args(
__k, piecewise_construct, std::forward_as_tuple(std::move(__k)), std::forward_as_tuple())
.first->__get_value()
.second;
}
#else // _LIBCPP_CXX03_LANG
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
typename unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::__node_holder
unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::__construct_node_with_key(const key_type& __k) {
__node_allocator& __na = __table_.__node_alloc();
__node_holder __h(__node_traits::allocate(__na, 1), _Dp(__na));
__node_traits::construct(__na, std::addressof(__h->__get_value().__get_value().first), __k);
__h.get_deleter().__first_constructed = true;
__node_traits::construct(__na, std::addressof(__h->__get_value().__get_value().second));
__h.get_deleter().__second_constructed = true;
return __h;
}
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
_Tp& unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::operator[](const key_type& __k) {
iterator __i = find(__k);
if (__i != end())
return __i->second;
__node_holder __h = __construct_node_with_key(__k);
pair<iterator, bool> __r = __table_.__node_insert_unique(__h.get());
__h.release();
return __r.first->second;
}
#endif // _LIBCPP_CXX03_LANG
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
_Tp& unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::at(const key_type& __k) {
iterator __i = find(__k);
if (__i == end())
__throw_out_of_range("unordered_map::at: key not found");
return __i->second;
}
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
const _Tp& unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::at(const key_type& __k) const {
const_iterator __i = find(__k);
if (__i == end())
__throw_out_of_range("unordered_map::at: key not found");
return __i->second;
}
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
inline _LIBCPP_HIDE_FROM_ABI void
swap(unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __x, unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
_NOEXCEPT_(_NOEXCEPT_(__x.swap(__y))) {
__x.swap(__y);
}
#if _LIBCPP_STD_VER >= 20
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc, class _Predicate>
inline _LIBCPP_HIDE_FROM_ABI typename unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::size_type
erase_if(unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __c, _Predicate __pred) {
return std::__libcpp_erase_if_container(__c, __pred);
}
#endif
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
_LIBCPP_HIDE_FROM_ABI bool operator==(const unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
const unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __y) {
if (__x.size() != __y.size())
return false;
typedef typename unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::const_iterator const_iterator;
for (const_iterator __i = __x.begin(), __ex = __x.end(), __ey = __y.end(); __i != __ex; ++__i) {
const_iterator __j = __y.find(__i->first);
if (__j == __ey || !(*__i == *__j))
return false;
}
return true;
}
#if _LIBCPP_STD_VER <= 17
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
inline _LIBCPP_HIDE_FROM_ABI bool operator!=(const unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
const unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __y) {
return !(__x == __y);
}
#endif
template <class _Key,
class _Tp,
class _Hash = hash<_Key>,
class _Pred = equal_to<_Key>,
class _Alloc = allocator<pair<const _Key, _Tp> > >
class _LIBCPP_TEMPLATE_VIS unordered_multimap {
public:
// types
typedef _Key key_type;
typedef _Tp mapped_type;
typedef __type_identity_t<_Hash> hasher;
typedef __type_identity_t<_Pred> key_equal;
typedef __type_identity_t<_Alloc> allocator_type;
typedef pair<const key_type, mapped_type> value_type;
typedef value_type& reference;
typedef const value_type& const_reference;
static_assert(__check_valid_allocator<allocator_type>::value, "");
static_assert(is_same<value_type, typename allocator_type::value_type>::value,
"Allocator::value_type must be same type as value_type");
private:
typedef __hash_value_type<key_type, mapped_type> __value_type;
typedef __unordered_map_hasher<key_type, __value_type, hasher, key_equal> __hasher;
typedef __unordered_map_equal<key_type, __value_type, key_equal, hasher> __key_equal;
typedef __rebind_alloc<allocator_traits<allocator_type>, __value_type> __allocator_type;
typedef __hash_table<__value_type, __hasher, __key_equal, __allocator_type> __table;
__table __table_;
typedef typename __table::_NodeTypes _NodeTypes;
typedef typename __table::__node_traits __node_traits;
typedef typename __table::__node_allocator __node_allocator;
typedef typename __table::__node __node;
typedef __hash_map_node_destructor<__node_allocator> _Dp;
typedef unique_ptr<__node, _Dp> __node_holder;
typedef allocator_traits<allocator_type> __alloc_traits;
static_assert(is_same<typename __node_traits::size_type, typename __alloc_traits::size_type>::value,
"Allocator uses different size_type for different types");
public:
typedef typename __alloc_traits::pointer pointer;
typedef typename __alloc_traits::const_pointer const_pointer;
typedef typename __table::size_type size_type;
typedef typename __table::difference_type difference_type;
typedef __hash_map_iterator<typename __table::iterator> iterator;
typedef __hash_map_const_iterator<typename __table::const_iterator> const_iterator;
typedef __hash_map_iterator<typename __table::local_iterator> local_iterator;
typedef __hash_map_const_iterator<typename __table::const_local_iterator> const_local_iterator;
#if _LIBCPP_STD_VER >= 17
typedef __map_node_handle<__node, allocator_type> node_type;
#endif
template <class _Key2, class _Tp2, class _Hash2, class _Pred2, class _Alloc2>
friend class _LIBCPP_TEMPLATE_VIS unordered_map;
template <class _Key2, class _Tp2, class _Hash2, class _Pred2, class _Alloc2>
friend class _LIBCPP_TEMPLATE_VIS unordered_multimap;
_LIBCPP_HIDE_FROM_ABI unordered_multimap() _NOEXCEPT_(is_nothrow_default_constructible<__table>::value) {}
explicit _LIBCPP_HIDE_FROM_ABI
unordered_multimap(size_type __n, const hasher& __hf = hasher(), const key_equal& __eql = key_equal());
_LIBCPP_HIDE_FROM_ABI
unordered_multimap(size_type __n, const hasher& __hf, const key_equal& __eql, const allocator_type& __a);
template <class _InputIterator>
_LIBCPP_HIDE_FROM_ABI unordered_multimap(_InputIterator __first, _InputIterator __last);
template <class _InputIterator>
_LIBCPP_HIDE_FROM_ABI unordered_multimap(
_InputIterator __first,
_InputIterator __last,
size_type __n,
const hasher& __hf = hasher(),
const key_equal& __eql = key_equal());
template <class _InputIterator>
_LIBCPP_HIDE_FROM_ABI unordered_multimap(
_InputIterator __first,
_InputIterator __last,
size_type __n,
const hasher& __hf,
const key_equal& __eql,
const allocator_type& __a);
#if _LIBCPP_STD_VER >= 23
template <_ContainerCompatibleRange<value_type> _Range>
_LIBCPP_HIDE_FROM_ABI unordered_multimap(
from_range_t,
_Range&& __range,
size_type __n = /*implementation-defined*/ 0,
const hasher& __hf = hasher(),
const key_equal& __eql = key_equal(),
const allocator_type& __a = allocator_type())
: __table_(__hf, __eql, typename __table::allocator_type(__a)) {
if (__n > 0) {
__table_.__rehash_multi(__n);
}
insert_range(std::forward<_Range>(__range));
}
#endif
_LIBCPP_HIDE_FROM_ABI explicit unordered_multimap(const allocator_type& __a);
_LIBCPP_HIDE_FROM_ABI unordered_multimap(const unordered_multimap& __u);
_LIBCPP_HIDE_FROM_ABI unordered_multimap(const unordered_multimap& __u, const allocator_type& __a);
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI unordered_multimap(unordered_multimap&& __u)
_NOEXCEPT_(is_nothrow_move_constructible<__table>::value);
_LIBCPP_HIDE_FROM_ABI unordered_multimap(unordered_multimap&& __u, const allocator_type& __a);
_LIBCPP_HIDE_FROM_ABI unordered_multimap(initializer_list<value_type> __il);
_LIBCPP_HIDE_FROM_ABI unordered_multimap(
initializer_list<value_type> __il,
size_type __n,
const hasher& __hf = hasher(),
const key_equal& __eql = key_equal());
_LIBCPP_HIDE_FROM_ABI unordered_multimap(
initializer_list<value_type> __il,
size_type __n,
const hasher& __hf,
const key_equal& __eql,
const allocator_type& __a);
#endif // _LIBCPP_CXX03_LANG
#if _LIBCPP_STD_VER >= 14
_LIBCPP_HIDE_FROM_ABI unordered_multimap(size_type __n, const allocator_type& __a)
: unordered_multimap(__n, hasher(), key_equal(), __a) {}
_LIBCPP_HIDE_FROM_ABI unordered_multimap(size_type __n, const hasher& __hf, const allocator_type& __a)
: unordered_multimap(__n, __hf, key_equal(), __a) {}
template <class _InputIterator>
_LIBCPP_HIDE_FROM_ABI
unordered_multimap(_InputIterator __first, _InputIterator __last, size_type __n, const allocator_type& __a)
: unordered_multimap(__first, __last, __n, hasher(), key_equal(), __a) {}
template <class _InputIterator>
_LIBCPP_HIDE_FROM_ABI unordered_multimap(
_InputIterator __first, _InputIterator __last, size_type __n, const hasher& __hf, const allocator_type& __a)
: unordered_multimap(__first, __last, __n, __hf, key_equal(), __a) {}
# if _LIBCPP_STD_VER >= 23
template <_ContainerCompatibleRange<value_type> _Range>
_LIBCPP_HIDE_FROM_ABI unordered_multimap(from_range_t, _Range&& __range, size_type __n, const allocator_type& __a)
: unordered_multimap(from_range, std::forward<_Range>(__range), __n, hasher(), key_equal(), __a) {}
template <_ContainerCompatibleRange<value_type> _Range>
_LIBCPP_HIDE_FROM_ABI
unordered_multimap(from_range_t, _Range&& __range, size_type __n, const hasher& __hf, const allocator_type& __a)
: unordered_multimap(from_range, std::forward<_Range>(__range), __n, __hf, key_equal(), __a) {}
# endif
_LIBCPP_HIDE_FROM_ABI unordered_multimap(initializer_list<value_type> __il, size_type __n, const allocator_type& __a)
: unordered_multimap(__il, __n, hasher(), key_equal(), __a) {}
_LIBCPP_HIDE_FROM_ABI
unordered_multimap(initializer_list<value_type> __il, size_type __n, const hasher& __hf, const allocator_type& __a)
: unordered_multimap(__il, __n, __hf, key_equal(), __a) {}
#endif
_LIBCPP_HIDE_FROM_ABI ~unordered_multimap() {
static_assert(sizeof(std::__diagnose_unordered_container_requirements<_Key, _Hash, _Pred>(0)), "");
}
_LIBCPP_HIDE_FROM_ABI unordered_multimap& operator=(const unordered_multimap& __u) {
#ifndef _LIBCPP_CXX03_LANG
__table_ = __u.__table_;
#else
if (this != std::addressof(__u)) {
__table_.clear();
__table_.hash_function() = __u.__table_.hash_function();
__table_.key_eq() = __u.__table_.key_eq();
__table_.max_load_factor() = __u.__table_.max_load_factor();
__table_.__copy_assign_alloc(__u.__table_);
insert(__u.begin(), __u.end());
}
#endif
return *this;
}
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI unordered_multimap& operator=(unordered_multimap&& __u)
_NOEXCEPT_(is_nothrow_move_assignable<__table>::value);
_LIBCPP_HIDE_FROM_ABI unordered_multimap& operator=(initializer_list<value_type> __il);
#endif // _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI allocator_type get_allocator() const _NOEXCEPT {
return allocator_type(__table_.__node_alloc());
}
_LIBCPP_NODISCARD _LIBCPP_HIDE_FROM_ABI bool empty() const _NOEXCEPT { return __table_.size() == 0; }
_LIBCPP_HIDE_FROM_ABI size_type size() const _NOEXCEPT { return __table_.size(); }
_LIBCPP_HIDE_FROM_ABI size_type max_size() const _NOEXCEPT { return __table_.max_size(); }
_LIBCPP_HIDE_FROM_ABI iterator begin() _NOEXCEPT { return __table_.begin(); }
_LIBCPP_HIDE_FROM_ABI iterator end() _NOEXCEPT { return __table_.end(); }
_LIBCPP_HIDE_FROM_ABI const_iterator begin() const _NOEXCEPT { return __table_.begin(); }
_LIBCPP_HIDE_FROM_ABI const_iterator end() const _NOEXCEPT { return __table_.end(); }
_LIBCPP_HIDE_FROM_ABI const_iterator cbegin() const _NOEXCEPT { return __table_.begin(); }
_LIBCPP_HIDE_FROM_ABI const_iterator cend() const _NOEXCEPT { return __table_.end(); }
_LIBCPP_HIDE_FROM_ABI iterator insert(const value_type& __x) { return __table_.__insert_multi(__x); }
_LIBCPP_HIDE_FROM_ABI iterator insert(const_iterator __p, const value_type& __x) {
return __table_.__insert_multi(__p.__i_, __x);
}
template <class _InputIterator>
_LIBCPP_HIDE_FROM_ABI void insert(_InputIterator __first, _InputIterator __last);
#if _LIBCPP_STD_VER >= 23
template <_ContainerCompatibleRange<value_type> _Range>
_LIBCPP_HIDE_FROM_ABI void insert_range(_Range&& __range) {
for (auto&& __element : __range) {
__table_.__insert_multi(std::forward<decltype(__element)>(__element));
}
}
#endif
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI void insert(initializer_list<value_type> __il) { insert(__il.begin(), __il.end()); }
_LIBCPP_HIDE_FROM_ABI iterator insert(value_type&& __x) { return __table_.__insert_multi(std::move(__x)); }
_LIBCPP_HIDE_FROM_ABI iterator insert(const_iterator __p, value_type&& __x) {
return __table_.__insert_multi(__p.__i_, std::move(__x));
}
template <class _Pp, __enable_if_t<is_constructible<value_type, _Pp>::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI iterator insert(_Pp&& __x) {
return __table_.__insert_multi(std::forward<_Pp>(__x));
}
template <class _Pp, __enable_if_t<is_constructible<value_type, _Pp>::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI iterator insert(const_iterator __p, _Pp&& __x) {
return __table_.__insert_multi(__p.__i_, std::forward<_Pp>(__x));
}
template <class... _Args>
_LIBCPP_HIDE_FROM_ABI iterator emplace(_Args&&... __args) {
return __table_.__emplace_multi(std::forward<_Args>(__args)...);
}
template <class... _Args>
_LIBCPP_HIDE_FROM_ABI iterator emplace_hint(const_iterator __p, _Args&&... __args) {
return __table_.__emplace_hint_multi(__p.__i_, std::forward<_Args>(__args)...);
}
#endif // _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI iterator erase(const_iterator __p) { return __table_.erase(__p.__i_); }
_LIBCPP_HIDE_FROM_ABI iterator erase(iterator __p) { return __table_.erase(__p.__i_); }
_LIBCPP_HIDE_FROM_ABI size_type erase(const key_type& __k) { return __table_.__erase_multi(__k); }
_LIBCPP_HIDE_FROM_ABI iterator erase(const_iterator __first, const_iterator __last) {
return __table_.erase(__first.__i_, __last.__i_);
}
_LIBCPP_HIDE_FROM_ABI void clear() _NOEXCEPT { __table_.clear(); }
#if _LIBCPP_STD_VER >= 17
_LIBCPP_HIDE_FROM_ABI iterator insert(node_type&& __nh) {
_LIBCPP_ASSERT_COMPATIBLE_ALLOCATOR(__nh.empty() || __nh.get_allocator() == get_allocator(),
"node_type with incompatible allocator passed to unordered_multimap::insert()");
return __table_.template __node_handle_insert_multi<node_type>(std::move(__nh));
}
_LIBCPP_HIDE_FROM_ABI iterator insert(const_iterator __hint, node_type&& __nh) {
_LIBCPP_ASSERT_COMPATIBLE_ALLOCATOR(__nh.empty() || __nh.get_allocator() == get_allocator(),
"node_type with incompatible allocator passed to unordered_multimap::insert()");
return __table_.template __node_handle_insert_multi<node_type>(__hint.__i_, std::move(__nh));
}
_LIBCPP_HIDE_FROM_ABI node_type extract(key_type const& __key) {
return __table_.template __node_handle_extract<node_type>(__key);
}
_LIBCPP_HIDE_FROM_ABI node_type extract(const_iterator __it) {
return __table_.template __node_handle_extract<node_type>(__it.__i_);
}
template <class _H2, class _P2>
_LIBCPP_HIDE_FROM_ABI void merge(unordered_multimap<key_type, mapped_type, _H2, _P2, allocator_type>& __source) {
_LIBCPP_ASSERT_COMPATIBLE_ALLOCATOR(
__source.get_allocator() == get_allocator(), "merging container with incompatible allocator");
return __table_.__node_handle_merge_multi(__source.__table_);
}
template <class _H2, class _P2>
_LIBCPP_HIDE_FROM_ABI void merge(unordered_multimap<key_type, mapped_type, _H2, _P2, allocator_type>&& __source) {
_LIBCPP_ASSERT_COMPATIBLE_ALLOCATOR(
__source.get_allocator() == get_allocator(), "merging container with incompatible allocator");
return __table_.__node_handle_merge_multi(__source.__table_);
}
template <class _H2, class _P2>
_LIBCPP_HIDE_FROM_ABI void merge(unordered_map<key_type, mapped_type, _H2, _P2, allocator_type>& __source) {
_LIBCPP_ASSERT_COMPATIBLE_ALLOCATOR(
__source.get_allocator() == get_allocator(), "merging container with incompatible allocator");
return __table_.__node_handle_merge_multi(__source.__table_);
}
template <class _H2, class _P2>
_LIBCPP_HIDE_FROM_ABI void merge(unordered_map<key_type, mapped_type, _H2, _P2, allocator_type>&& __source) {
_LIBCPP_ASSERT_COMPATIBLE_ALLOCATOR(
__source.get_allocator() == get_allocator(), "merging container with incompatible allocator");
return __table_.__node_handle_merge_multi(__source.__table_);
}
#endif
_LIBCPP_HIDE_FROM_ABI void swap(unordered_multimap& __u) _NOEXCEPT_(__is_nothrow_swappable_v<__table>) {
__table_.swap(__u.__table_);
}
_LIBCPP_HIDE_FROM_ABI hasher hash_function() const { return __table_.hash_function().hash_function(); }
_LIBCPP_HIDE_FROM_ABI key_equal key_eq() const { return __table_.key_eq().key_eq(); }
_LIBCPP_HIDE_FROM_ABI iterator find(const key_type& __k) { return __table_.find(__k); }
_LIBCPP_HIDE_FROM_ABI const_iterator find(const key_type& __k) const { return __table_.find(__k); }
#if _LIBCPP_STD_VER >= 20
template <class _K2, enable_if_t<__is_transparent_v<hasher, _K2> && __is_transparent_v<key_equal, _K2>>* = nullptr>
_LIBCPP_HIDE_FROM_ABI iterator find(const _K2& __k) {
return __table_.find(__k);
}
template <class _K2, enable_if_t<__is_transparent_v<hasher, _K2> && __is_transparent_v<key_equal, _K2>>* = nullptr>
_LIBCPP_HIDE_FROM_ABI const_iterator find(const _K2& __k) const {
return __table_.find(__k);
}
#endif // _LIBCPP_STD_VER >= 20
_LIBCPP_HIDE_FROM_ABI size_type count(const key_type& __k) const { return __table_.__count_multi(__k); }
#if _LIBCPP_STD_VER >= 20
template <class _K2, enable_if_t<__is_transparent_v<hasher, _K2> && __is_transparent_v<key_equal, _K2>>* = nullptr>
_LIBCPP_HIDE_FROM_ABI size_type count(const _K2& __k) const {
return __table_.__count_multi(__k);
}
#endif // _LIBCPP_STD_VER >= 20
#if _LIBCPP_STD_VER >= 20
_LIBCPP_HIDE_FROM_ABI bool contains(const key_type& __k) const { return find(__k) != end(); }
template <class _K2, enable_if_t<__is_transparent_v<hasher, _K2> && __is_transparent_v<key_equal, _K2>>* = nullptr>
_LIBCPP_HIDE_FROM_ABI bool contains(const _K2& __k) const {
return find(__k) != end();
}
#endif // _LIBCPP_STD_VER >= 20
_LIBCPP_HIDE_FROM_ABI pair<iterator, iterator> equal_range(const key_type& __k) {
return __table_.__equal_range_multi(__k);
}
_LIBCPP_HIDE_FROM_ABI pair<const_iterator, const_iterator> equal_range(const key_type& __k) const {
return __table_.__equal_range_multi(__k);
}
#if _LIBCPP_STD_VER >= 20
template <class _K2, enable_if_t<__is_transparent_v<hasher, _K2> && __is_transparent_v<key_equal, _K2>>* = nullptr>
_LIBCPP_HIDE_FROM_ABI pair<iterator, iterator> equal_range(const _K2& __k) {
return __table_.__equal_range_multi(__k);
}
template <class _K2, enable_if_t<__is_transparent_v<hasher, _K2> && __is_transparent_v<key_equal, _K2>>* = nullptr>
_LIBCPP_HIDE_FROM_ABI pair<const_iterator, const_iterator> equal_range(const _K2& __k) const {
return __table_.__equal_range_multi(__k);
}
#endif // _LIBCPP_STD_VER >= 20
_LIBCPP_HIDE_FROM_ABI size_type bucket_count() const _NOEXCEPT { return __table_.bucket_count(); }
_LIBCPP_HIDE_FROM_ABI size_type max_bucket_count() const _NOEXCEPT { return __table_.max_bucket_count(); }
_LIBCPP_HIDE_FROM_ABI size_type bucket_size(size_type __n) const { return __table_.bucket_size(__n); }
_LIBCPP_HIDE_FROM_ABI size_type bucket(const key_type& __k) const { return __table_.bucket(__k); }
_LIBCPP_HIDE_FROM_ABI local_iterator begin(size_type __n) { return __table_.begin(__n); }
_LIBCPP_HIDE_FROM_ABI local_iterator end(size_type __n) { return __table_.end(__n); }
_LIBCPP_HIDE_FROM_ABI const_local_iterator begin(size_type __n) const { return __table_.cbegin(__n); }
_LIBCPP_HIDE_FROM_ABI const_local_iterator end(size_type __n) const { return __table_.cend(__n); }
_LIBCPP_HIDE_FROM_ABI const_local_iterator cbegin(size_type __n) const { return __table_.cbegin(__n); }
_LIBCPP_HIDE_FROM_ABI const_local_iterator cend(size_type __n) const { return __table_.cend(__n); }
_LIBCPP_HIDE_FROM_ABI float load_factor() const _NOEXCEPT { return __table_.load_factor(); }
_LIBCPP_HIDE_FROM_ABI float max_load_factor() const _NOEXCEPT { return __table_.max_load_factor(); }
_LIBCPP_HIDE_FROM_ABI void max_load_factor(float __mlf) { __table_.max_load_factor(__mlf); }
_LIBCPP_HIDE_FROM_ABI void rehash(size_type __n) { __table_.__rehash_multi(__n); }
_LIBCPP_HIDE_FROM_ABI void reserve(size_type __n) { __table_.__reserve_multi(__n); }
};
#if _LIBCPP_STD_VER >= 17
template <class _InputIterator,
class _Hash = hash<__iter_key_type<_InputIterator>>,
class _Pred = equal_to<__iter_key_type<_InputIterator>>,
class _Allocator = allocator<__iter_to_alloc_type<_InputIterator>>,
class = enable_if_t<__has_input_iterator_category<_InputIterator>::value>,
class = enable_if_t<!__is_allocator<_Hash>::value>,
class = enable_if_t<!is_integral<_Hash>::value>,
class = enable_if_t<!__is_allocator<_Pred>::value>,
class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_multimap(_InputIterator,
_InputIterator,
typename allocator_traits<_Allocator>::size_type = 0,
_Hash = _Hash(),
_Pred = _Pred(),
_Allocator = _Allocator())
-> unordered_multimap<__iter_key_type<_InputIterator>,
__iter_mapped_type<_InputIterator>,
_Hash,
_Pred,
_Allocator>;
# if _LIBCPP_STD_VER >= 23
template <ranges::input_range _Range,
class _Hash = hash<__range_key_type<_Range>>,
class _Pred = equal_to<__range_key_type<_Range>>,
class _Allocator = allocator<__range_to_alloc_type<_Range>>,
class = enable_if_t<!__is_allocator<_Hash>::value>,
class = enable_if_t<!is_integral<_Hash>::value>,
class = enable_if_t<!__is_allocator<_Pred>::value>,
class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_multimap(from_range_t,
_Range&&,
typename allocator_traits<_Allocator>::size_type = 0,
_Hash = _Hash(),
_Pred = _Pred(),
_Allocator = _Allocator())
-> unordered_multimap<__range_key_type<_Range>, __range_mapped_type<_Range>, _Hash, _Pred, _Allocator>;
# endif
template <class _Key,
class _Tp,
class _Hash = hash<remove_const_t<_Key>>,
class _Pred = equal_to<remove_const_t<_Key>>,
class _Allocator = allocator<pair<const _Key, _Tp>>,
class = enable_if_t<!__is_allocator<_Hash>::value>,
class = enable_if_t<!is_integral<_Hash>::value>,
class = enable_if_t<!__is_allocator<_Pred>::value>,
class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_multimap(
initializer_list<pair<_Key, _Tp>>,
typename allocator_traits<_Allocator>::size_type = 0,
_Hash = _Hash(),
_Pred = _Pred(),
_Allocator = _Allocator()) -> unordered_multimap<remove_const_t<_Key>, _Tp, _Hash, _Pred, _Allocator>;
template <class _InputIterator,
class _Allocator,
class = enable_if_t<__has_input_iterator_category<_InputIterator>::value>,
class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_multimap(_InputIterator, _InputIterator, typename allocator_traits<_Allocator>::size_type, _Allocator)
-> unordered_multimap<__iter_key_type<_InputIterator>,
__iter_mapped_type<_InputIterator>,
hash<__iter_key_type<_InputIterator>>,
equal_to<__iter_key_type<_InputIterator>>,
_Allocator>;
template <class _InputIterator,
class _Allocator,
class = enable_if_t<__has_input_iterator_category<_InputIterator>::value>,
class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_multimap(_InputIterator, _InputIterator, _Allocator)
-> unordered_multimap<__iter_key_type<_InputIterator>,
__iter_mapped_type<_InputIterator>,
hash<__iter_key_type<_InputIterator>>,
equal_to<__iter_key_type<_InputIterator>>,
_Allocator>;
template <class _InputIterator,
class _Hash,
class _Allocator,
class = enable_if_t<__has_input_iterator_category<_InputIterator>::value>,
class = enable_if_t<!__is_allocator<_Hash>::value>,
class = enable_if_t<!is_integral<_Hash>::value>,
class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_multimap(_InputIterator, _InputIterator, typename allocator_traits<_Allocator>::size_type, _Hash, _Allocator)
-> unordered_multimap<__iter_key_type<_InputIterator>,
__iter_mapped_type<_InputIterator>,
_Hash,
equal_to<__iter_key_type<_InputIterator>>,
_Allocator>;
# if _LIBCPP_STD_VER >= 23
template <ranges::input_range _Range, class _Allocator, class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_multimap(from_range_t, _Range&&, typename allocator_traits<_Allocator>::size_type, _Allocator)
-> unordered_multimap<__range_key_type<_Range>,
__range_mapped_type<_Range>,
hash<__range_key_type<_Range>>,
equal_to<__range_key_type<_Range>>,
_Allocator>;
template <ranges::input_range _Range, class _Allocator, class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_multimap(from_range_t, _Range&&, _Allocator)
-> unordered_multimap<__range_key_type<_Range>,
__range_mapped_type<_Range>,
hash<__range_key_type<_Range>>,
equal_to<__range_key_type<_Range>>,
_Allocator>;
template <ranges::input_range _Range,
class _Hash,
class _Allocator,
class = enable_if_t<!__is_allocator<_Hash>::value>,
class = enable_if_t<!is_integral<_Hash>::value>,
class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_multimap(from_range_t, _Range&&, typename allocator_traits<_Allocator>::size_type, _Hash, _Allocator)
-> unordered_multimap<__range_key_type<_Range>,
__range_mapped_type<_Range>,
_Hash,
equal_to<__range_key_type<_Range>>,
_Allocator>;
# endif
template <class _Key, class _Tp, class _Allocator, class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_multimap(initializer_list<pair<_Key, _Tp>>, typename allocator_traits<_Allocator>::size_type, _Allocator)
-> unordered_multimap<remove_const_t<_Key>,
_Tp,
hash<remove_const_t<_Key>>,
equal_to<remove_const_t<_Key>>,
_Allocator>;
template <class _Key, class _Tp, class _Allocator, class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_multimap(initializer_list<pair<_Key, _Tp>>, _Allocator)
-> unordered_multimap<remove_const_t<_Key>,
_Tp,
hash<remove_const_t<_Key>>,
equal_to<remove_const_t<_Key>>,
_Allocator>;
template <class _Key,
class _Tp,
class _Hash,
class _Allocator,
class = enable_if_t<!__is_allocator<_Hash>::value>,
class = enable_if_t<!is_integral<_Hash>::value>,
class = enable_if_t<__is_allocator<_Allocator>::value>>
unordered_multimap(
initializer_list<pair<_Key, _Tp>>, typename allocator_traits<_Allocator>::size_type, _Hash, _Allocator)
-> unordered_multimap<remove_const_t<_Key>, _Tp, _Hash, equal_to<remove_const_t<_Key>>, _Allocator>;
#endif
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
size_type __n, const hasher& __hf, const key_equal& __eql)
: __table_(__hf, __eql) {
__table_.__rehash_multi(__n);
}
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
size_type __n, const hasher& __hf, const key_equal& __eql, const allocator_type& __a)
: __table_(__hf, __eql, typename __table::allocator_type(__a)) {
__table_.__rehash_multi(__n);
}
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class _InputIterator>
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(_InputIterator __first, _InputIterator __last) {
insert(__first, __last);
}
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class _InputIterator>
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
_InputIterator __first, _InputIterator __last, size_type __n, const hasher& __hf, const key_equal& __eql)
: __table_(__hf, __eql) {
__table_.__rehash_multi(__n);
insert(__first, __last);
}
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class _InputIterator>
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
_InputIterator __first,
_InputIterator __last,
size_type __n,
const hasher& __hf,
const key_equal& __eql,
const allocator_type& __a)
: __table_(__hf, __eql, typename __table::allocator_type(__a)) {
__table_.__rehash_multi(__n);
insert(__first, __last);
}
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
inline unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(const allocator_type& __a)
: __table_(typename __table::allocator_type(__a)) {}
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(const unordered_multimap& __u)
: __table_(__u.__table_) {
__table_.__rehash_multi(__u.bucket_count());
insert(__u.begin(), __u.end());
}
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
const unordered_multimap& __u, const allocator_type& __a)
: __table_(__u.__table_, typename __table::allocator_type(__a)) {
__table_.__rehash_multi(__u.bucket_count());
insert(__u.begin(), __u.end());
}
#ifndef _LIBCPP_CXX03_LANG
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
inline unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(unordered_multimap&& __u)
_NOEXCEPT_(is_nothrow_move_constructible<__table>::value)
: __table_(std::move(__u.__table_)) {}
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
unordered_multimap&& __u, const allocator_type& __a)
: __table_(std::move(__u.__table_), typename __table::allocator_type(__a)) {
if (__a != __u.get_allocator()) {
iterator __i = __u.begin();
while (__u.size() != 0) {
__table_.__insert_multi(__u.__table_.remove((__i++).__i_)->__get_value().__move());
}
}
}
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(initializer_list<value_type> __il) {
insert(__il.begin(), __il.end());
}
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
initializer_list<value_type> __il, size_type __n, const hasher& __hf, const key_equal& __eql)
: __table_(__hf, __eql) {
__table_.__rehash_multi(__n);
insert(__il.begin(), __il.end());
}
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
initializer_list<value_type> __il,
size_type __n,
const hasher& __hf,
const key_equal& __eql,
const allocator_type& __a)
: __table_(__hf, __eql, typename __table::allocator_type(__a)) {
__table_.__rehash_multi(__n);
insert(__il.begin(), __il.end());
}
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
inline unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>&
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::operator=(unordered_multimap&& __u)
_NOEXCEPT_(is_nothrow_move_assignable<__table>::value) {
__table_ = std::move(__u.__table_);
return *this;
}
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
inline unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>&
unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::operator=(initializer_list<value_type> __il) {
__table_.__assign_multi(__il.begin(), __il.end());
return *this;
}
#endif // _LIBCPP_CXX03_LANG
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
template <class _InputIterator>
inline void unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::insert(_InputIterator __first, _InputIterator __last) {
for (; __first != __last; ++__first)
__table_.__insert_multi(*__first);
}
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
inline _LIBCPP_HIDE_FROM_ABI void
swap(unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __x, unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
_NOEXCEPT_(_NOEXCEPT_(__x.swap(__y))) {
__x.swap(__y);
}
#if _LIBCPP_STD_VER >= 20
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc, class _Predicate>
inline _LIBCPP_HIDE_FROM_ABI typename unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::size_type
erase_if(unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __c, _Predicate __pred) {
return std::__libcpp_erase_if_container(__c, __pred);
}
#endif
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
_LIBCPP_HIDE_FROM_ABI bool operator==(const unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
const unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __y) {
if (__x.size() != __y.size())
return false;
typedef typename unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::const_iterator const_iterator;
typedef pair<const_iterator, const_iterator> _EqRng;
for (const_iterator __i = __x.begin(), __ex = __x.end(); __i != __ex;) {
_EqRng __xeq = __x.equal_range(__i->first);
_EqRng __yeq = __y.equal_range(__i->first);
if (std::distance(__xeq.first, __xeq.second) != std::distance(__yeq.first, __yeq.second) ||
!std::is_permutation(__xeq.first, __xeq.second, __yeq.first))
return false;
__i = __xeq.second;
}
return true;
}
#if _LIBCPP_STD_VER <= 17
template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
inline _LIBCPP_HIDE_FROM_ABI bool operator!=(const unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
const unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __y) {
return !(__x == __y);
}
#endif
_LIBCPP_END_NAMESPACE_STD
#if _LIBCPP_STD_VER >= 17
_LIBCPP_BEGIN_NAMESPACE_STD
namespace pmr {
template <class _KeyT, class _ValueT, class _HashT = std::hash<_KeyT>, class _PredT = std::equal_to<_KeyT>>
using unordered_map _LIBCPP_AVAILABILITY_PMR =
std::unordered_map<_KeyT, _ValueT, _HashT, _PredT, polymorphic_allocator<std::pair<const _KeyT, _ValueT>>>;
template <class _KeyT, class _ValueT, class _HashT = std::hash<_KeyT>, class _PredT = std::equal_to<_KeyT>>
using unordered_multimap _LIBCPP_AVAILABILITY_PMR =
std::unordered_multimap<_KeyT, _ValueT, _HashT, _PredT, polymorphic_allocator<std::pair<const _KeyT, _ValueT>>>;
} // namespace pmr
_LIBCPP_END_NAMESPACE_STD
#endif
_LIBCPP_POP_MACROS
#if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
# include <algorithm>
# include <bit>
# include <concepts>
# include <cstdlib>
# include <iterator>
# include <type_traits>
#endif
#endif // _LIBCPP_UNORDERED_MAP