Public Types¶

typedef _Hashtable::key_type key_type
typedef _Hashtable::value_type value_type
typedef _Hashtable::mapped_type mapped_type
typedef _Hashtable::hasher hasher
typedef _Hashtable::key_equal key_equal
typedef _Hashtable::allocator_type allocator_type

typedef allocator_type::pointer pointer
typedef
allocator_type::const_pointer const_pointer"
typedef allocator_type::reference reference
typedef
allocator_type::const_reference const_reference"
typedef _Hashtable::iterator iterator
typedef _Hashtable::const_iterator const_iterator
typedef _Hashtable::local_iterator local_iterator
typedef
_Hashtable::const_local_iterator const_local_iterator"
typedef _Hashtable::size_type size_type
typedef _Hashtable::difference_type difference_type

Public Member Functions¶

unordered_multimap (size_type __n=10, const hasher &__hf=hasher(), const key_equal &__eql=key_equal(), const allocator_type &__a=allocator_type())
template<typename _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())
unordered_multimap (const unordered_multimap &)=default
unordered_multimap (unordered_multimap &&)=default
unordered_multimap (initializer_list< value_type > __l, size_type __n=0, const hasher &__hf=hasher(), const key_equal &__eql=key_equal(), const allocator_type &__a=allocator_type())
iterator begin () noexcept
local_iterator begin (size_type __n)
size_type bucket (const key_type &__key) const
size_type bucket_count () const noexcept
size_type bucket_size (size_type __n) const
void clear () noexcept
size_type count (const key_type &__x) const
template<typename... _Args> iterator emplace (_Args &&...__args)
template<typename... _Args> iterator emplace_hint (const_iterator __pos, _Args &&...__args)
bool empty () const noexcept
iterator end () noexcept
local_iterator end (size_type __n)
size_type erase (const key_type &__x)
iterator erase (const_iterator __first, const_iterator __last)
allocator_type get_allocator () const noexcept
hasher hash_function () const
template<typename _InputIterator > void insert (_InputIterator __first, _InputIterator __last)
void insert (initializer_list< value_type > __l)
key_equal key_eq () const
float load_factor () const noexcept
size_type max_bucket_count () const noexcept
float max_load_factor () const noexcept
void max_load_factor (float __z)
size_type max_size () const noexcept
unordered_multimap & operator= (const unordered_multimap &)=default
unordered_multimap & operator= (unordered_multimap &&)=default
unordered_multimap & operator= (initializer_list< value_type > __l)
void rehash (size_type __n)
void reserve (size_type __n)
size_type size () const noexcept
void swap (unordered_multimap &__x)

const_iterator begin () const noexcept
const_iterator cbegin () const noexcept

const_iterator end () const noexcept
const_iterator cend () const noexcept

iterator insert (const value_type &__x)
template<typename _Pair , typename = typename std::enable_if<std::is_constructible<value_type, _Pair&&>::value>::type> iterator insert (_Pair &&__x)

iterator insert (const_iterator __hint, const value_type &__x)
template<typename _Pair , typename = typename std::enable_if<std::is_constructible<value_type, _Pair&&>::value>::type> iterator insert (const_iterator __hint, _Pair &&__x)

iterator erase (const_iterator __position)
iterator erase (iterator __it)

iterator find (const key_type &__x)
const_iterator find (const key_type &__x) const

std::pair< iterator, iterator > equal_range (const key_type &__x)
std::pair< const_iterator,
const_iterator > equal_range (const key_type &__x) const "

const_local_iterator begin (size_type __n) const
const_local_iterator cbegin (size_type __n) const

const_local_iterator end (size_type __n) const
const_local_iterator cend (size_type __n) const

Friends¶

template<typename _Key1 , typename _Tp1 , typename _Hash1 , typename _Pred1 , typename _Alloc1 > bool operator== (const unordered_multimap< _Key1, _Tp1, _Hash1, _Pred1, _Alloc1 > &, const unordered_multimap< _Key1, _Tp1, _Hash1, _Pred1, _Alloc1 > &)

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >>class std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >¶

A standard container composed of equivalent keys (possibly containing multiple of each key value) that associates values of another type with the keys.

Template Parameters:

Meets the requirements of a container, and unordered associative container

The resulting value type of the container is std::pair<const _Key, _Tp>.

Base is _Hashtable, dispatched at compile time via template alias __ummap_hashtable.

Definition at line 778 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> typedef _Hashtable::allocator_type std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::allocator_type¶

Public typedefs.

Definition at line 792 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> typedef _Hashtable::const_iterator std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::const_iterator¶

Iterator-related typedefs.

Definition at line 802 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> typedef _Hashtable::const_local_iterator std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::const_local_iterator¶

Iterator-related typedefs.

Definition at line 804 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> typedef allocator_type::const_pointer std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::const_pointer¶

Iterator-related typedefs.

Definition at line 798 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> typedef allocator_type::const_reference std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::const_reference¶

Iterator-related typedefs.

Definition at line 800 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> typedef _Hashtable::difference_type std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::difference_type¶

Iterator-related typedefs.

Definition at line 806 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> typedef _Hashtable::hasher std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::hasher¶

Public typedefs.

Definition at line 790 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> typedef _Hashtable::iterator std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::iterator¶

Iterator-related typedefs.

Definition at line 801 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> typedef _Hashtable::key_equal std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::key_equal¶

Public typedefs.

Definition at line 791 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> typedef _Hashtable::key_type std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::key_type¶

Public typedefs.

Definition at line 787 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> typedef _Hashtable::local_iterator std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::local_iterator¶

Iterator-related typedefs.

Definition at line 803 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> typedef _Hashtable::mapped_type std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::mapped_type¶

Public typedefs.

Definition at line 789 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> typedef allocator_type::pointer std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::pointer¶

Iterator-related typedefs.

Definition at line 797 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> typedef allocator_type::reference std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::reference¶

Iterator-related typedefs.

Definition at line 799 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> typedef _Hashtable::size_type std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::size_type¶

Iterator-related typedefs.

Definition at line 805 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> typedef _Hashtable::value_type std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::value_type¶

Public typedefs.

Definition at line 788 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::unordered_multimap (size_type__n = 10, const hasher &__hf = hasher(), const key_equal &__eql = key_equal(), const allocator_type &__a = allocator_type()) [inline], [explicit]¶

Default constructor creates no elements.

Parameters:

Definition at line 819 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> template<typename _InputIterator > std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::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()) [inline]¶

Builds an unordered_multimap from a range.

Parameters:

Create an unordered_multimap consisting of copies of the elements from [__first,__last). This is linear in N (where N is distance(__first,__last)).

Definition at line 840 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::unordered_multimap (const unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc > &) [default]¶

Copy constructor.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::unordered_multimap (unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc > &&) [default]¶

Move constructor.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::unordered_multimap (initializer_list< value_type >__l, size_type__n = 0, const hasher &__hf = hasher(), const key_equal &__eql = key_equal(), const allocator_type &__a = allocator_type()) [inline]¶

Builds an unordered_multimap from an initializer_list.

Parameters:

Create an unordered_multimap consisting of copies of the elements in the list. This is linear in N (where N is __l.size()).

Definition at line 865 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> iterator std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::begin () [inline], [noexcept]¶

Returns a read/write iterator that points to the first element in the unordered_multimap.

Definition at line 929 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> const_iterator std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::begin () const [inline], [noexcept]¶

Returns a read-only (constant) iterator that points to the first element in the unordered_multimap.

Definition at line 938 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> local_iterator std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::begin (size_type__n) [inline]¶

Returns a read/write iterator pointing to the first bucket element.

Parameters:

Returns:

Definition at line 1277 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> const_local_iterator std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::begin (size_type__n) const [inline]¶

Returns a read-only (constant) iterator pointing to the first bucket element.

Parameters:

Returns:

Definition at line 1288 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> size_type std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::bucket_count () const [inline], [noexcept]¶

Returns the number of buckets of the unordered_multimap.

Definition at line 1244 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> const_iterator std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::cbegin () const [inline], [noexcept]¶

Returns a read-only (constant) iterator that points to the first element in the unordered_multimap.

Definition at line 942 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> const_local_iterator std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::cbegin (size_type__n) const [inline]¶

Returns a read-only (constant) iterator pointing to the first bucket element.

Parameters:

Returns:

Definition at line 1292 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> const_iterator std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::cend () const [inline], [noexcept]¶

Returns a read-only (constant) iterator that points one past the last element in the unordered_multimap.

Definition at line 964 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> const_local_iterator std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::cend (size_type__n) const [inline]¶

Returns a read-only (constant) iterator pointing to one past the last bucket elements.

Parameters:

Returns:

Definition at line 1318 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> void std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::clear () [inline], [noexcept]¶

Erases all elements in an unordered_multimap. Note that this function only erases the elements, and that if the elements themselves are pointers, the pointed-to memory is not touched in any way. Managing the pointer is the user's responsibility.

Definition at line 1161 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> size_type std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::count (const key_type &__x) const [inline]¶

Finds the number of elements.

Parameters:

Returns:

Definition at line 1221 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> template<typename... _Args> iterator std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::emplace (_Args &&...__args) [inline]¶

Attempts to build and insert a std::pair into the unordered_multimap.

Parameters:

Returns:

This function attempts to build and insert a (key, value) pair into the unordered_multimap.

Insertion requires amortized constant time.

Definition at line 987 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> template<typename... _Args> iterator std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::emplace_hint (const_iterator__pos, _Args &&...__args) [inline]¶

Attempts to build and insert a std::pair into the unordered_multimap.

Parameters:

Returns:

Note that the first parameter is only a hint and can potentially improve the performance of the insertion process. A bad hint would cause no gains in efficiency.

See http://gcc.gnu.org/onlinedocs/libstdc++/manual/bk01pt07ch17.html for more on hinting.

Insertion requires amortized constant time.

Definition at line 1013 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> bool std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::empty () const [inline], [noexcept]¶

Returns true if the unordered_multimap is empty.

Definition at line 909 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> iterator std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::end () [inline], [noexcept]¶

Returns a read/write iterator that points one past the last element in the unordered_multimap.

Definition at line 951 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> const_iterator std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::end () const [inline], [noexcept]¶

Returns a read-only (constant) iterator that points one past the last element in the unordered_multimap.

Definition at line 960 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> local_iterator std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::end (size_type__n) [inline]¶

Returns a read/write iterator pointing to one past the last bucket elements.

Parameters:

Returns:

Definition at line 1303 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> const_local_iterator std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::end (size_type__n) const [inline]¶

Returns a read-only (constant) iterator pointing to one past the last bucket elements.

Parameters:

Returns:

Definition at line 1314 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> std::pair<iterator, iterator> std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::equal_range (const key_type &__x) [inline]¶

Finds a subsequence matching given key.

Parameters:

Returns:

Definition at line 1232 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> std::pair<const_iterator, const_iterator> std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::equal_range (const key_type &__x) const [inline]¶

Finds a subsequence matching given key.

Parameters:

Returns:

Definition at line 1236 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> iterator std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::erase (const_iterator__position) [inline]¶

Erases an element from an unordered_multimap.

Parameters:

Returns:

This function erases an element, pointed to by the given iterator, from an unordered_multimap. Note that this function only erases the element, and that if the element is itself a pointer, the pointed-to memory is not touched in any way. Managing the pointer is the user's responsibility.

Definition at line 1111 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> iterator std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::erase (iterator__it) [inline]¶

Erases an element from an unordered_multimap.

Parameters:

Returns:

This function erases an element, pointed to by the given iterator, from an unordered_multimap. Note that this function only erases the element, and that if the element is itself a pointer, the pointed-to memory is not touched in any way. Managing the pointer is the user's responsibility.

Definition at line 1116 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> size_type std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::erase (const key_type &__x) [inline]¶

Erases elements according to the provided key.

Parameters:

Returns:

This function erases all the elements located by the given key from an unordered_multimap. Note that this function only erases the element, and that if the element is itself a pointer, the pointed-to memory is not touched in any way. Managing the pointer is the user's responsibility.

Definition at line 1132 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> iterator std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::erase (const_iterator__first, const_iterator__last) [inline]¶

Erases a [__first,__last) range of elements from an unordered_multimap.

Parameters:

Returns:

This function erases a sequence of elements from an unordered_multimap. Note that this function only erases the elements, and that if the element is itself a pointer, the pointed-to memory is not touched in any way. Managing the pointer is the user's responsibility.

Definition at line 1151 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> iterator std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::find (const key_type &__x) [inline]¶

Tries to locate an element in an unordered_multimap.

Parameters:

Returns:

This function takes a key and tries to locate the element with which the key matches. If successful the function returns an iterator pointing to the sought after element. If unsuccessful it returns the past-the-end ( end() ) iterator.

Definition at line 1207 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> const_iterator std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::find (const key_type &__x) const [inline]¶

Tries to locate an element in an unordered_multimap.

Parameters:

Returns:

This function takes a key and tries to locate the element with which the key matches. If successful the function returns an iterator pointing to the sought after element. If unsuccessful it returns the past-the-end ( end() ) iterator.

Definition at line 1211 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> allocator_type std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::get_allocator () const [inline], [noexcept]¶

Returns the allocator object with which the unordered_multimap was constructed.

Definition at line 902 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> hasher std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::hash_function () const [inline]¶

Returns the hash functor object with which the unordered_multimap was constructed.

Definition at line 1183 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> iterator std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::insert (const value_type &__x) [inline]¶

Inserts a std::pair into the unordered_multimap.

Parameters:

Returns:

Insertion requires amortized constant time.

Definition at line 1027 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> template<typename _Pair , typename = typename std::enable_if<std::is_constructible<value_type, _Pair&&>::value>::type> iterator std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::insert (_Pair &&__x) [inline]¶

Inserts a std::pair into the unordered_multimap.

Parameters:

Returns:

Insertion requires amortized constant time.

Definition at line 1034 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> iterator std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::insert (const_iterator__hint, const value_type &__x) [inline]¶

Inserts a std::pair into the unordered_multimap.

Parameters:

Returns:

Note that the first parameter is only a hint and can potentially improve the performance of the insertion process. A bad hint would cause no gains in efficiency.

See http://gcc.gnu.org/onlinedocs/libstdc++/manual/bk01pt07ch17.html for more on hinting.

Insertion requires amortized constant time.

Definition at line 1059 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> template<typename _Pair , typename = typename std::enable_if<std::is_constructible<value_type, _Pair&&>::value>::type> iterator std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::insert (const_iterator__hint, _Pair &&__x) [inline]¶

Inserts a std::pair into the unordered_multimap.

Parameters:

Returns:

Note that the first parameter is only a hint and can potentially improve the performance of the insertion process. A bad hint would cause no gains in efficiency.

See http://gcc.gnu.org/onlinedocs/libstdc++/manual/bk01pt07ch17.html for more on hinting.

Insertion requires amortized constant time.

Definition at line 1066 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> template<typename _InputIterator > void std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::insert (_InputIterator__first, _InputIterator__last) [inline]¶

A template function that attempts to insert a range of elements.

Parameters:

Complexity similar to that of the range constructor.

Definition at line 1081 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> void std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::insert (initializer_list< value_type >__l) [inline]¶

Attempts to insert a list of elements into the unordered_multimap.

Parameters:

Complexity similar to that of the range constructor.

Definition at line 1093 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> key_equal std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::key_eq () const [inline]¶

Returns the key comparison object with which the unordered_multimap was constructed.

Definition at line 1189 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> float std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::load_factor () const [inline], [noexcept]¶

Returns the average number of elements per bucket.

Definition at line 1326 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> size_type std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::max_bucket_count () const [inline], [noexcept]¶

Returns the maximum number of buckets of the unordered_multimap.

Definition at line 1249 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> float std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::max_load_factor () const [inline], [noexcept]¶

Returns a positive number that the unordered_multimap tries to keep the load factor less than or equal to.

Definition at line 1332 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> void std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::max_load_factor (float__z) [inline]¶

Change the unordered_multimap maximum load factor.

Parameters:

Definition at line 1340 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> size_type std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::max_size () const [inline], [noexcept]¶

Returns the maximum size of the unordered_multimap.

Definition at line 919 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> unordered_multimap& std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::operator= (const unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc > &) [default]¶

Copy assignment operator.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> unordered_multimap& std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::operator= (unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc > &&) [default]¶

Move assignment operator.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> unordered_multimap& std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::operator= (initializer_list< value_type >__l) [inline]¶

Unordered_multimap list assignment operator.

Parameters:

This function fills an unordered_multimap with copies of the elements in the initializer list __l.

Note that the assignment completely changes the unordered_multimap and that the resulting unordered_multimap's size is the same as the number of elements assigned. Old data may be lost.

Definition at line 893 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> void std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::rehash (size_type__n) [inline]¶

May rehash the unordered_multimap.

Parameters:

Rehash will occur only if the new number of buckets respect the unordered_multimap maximum load factor.

Definition at line 1351 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> void std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::reserve (size_type__n) [inline]¶

Prepare the unordered_multimap for a specified number of elements.

Parameters:

Same as rehash(ceil(n / max_load_factor())).

Definition at line 1362 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> size_type std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::size () const [inline], [noexcept]¶

Returns the size of the unordered_multimap.

Definition at line 914 of file unordered_map.h.

template<class _Key, class _Tp, class _Hash = hash<_Key>, class _Pred = std::equal_to<_Key>, class _Alloc = std::allocator<std::pair<const _Key, _Tp> >> void std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::swap (unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc > &__x) [inline]¶

Swaps data with another unordered_multimap.

Parameters:

This exchanges the elements between two unordered_multimap in constant time. Note that the global std::swap() function is specialized such that std::swap(m1,m2) will feed to this function.

Definition at line 1175 of file unordered_map.h.