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std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >(3cxx) std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >(3cxx)

NAME

std::unordered_multiset< _Value, _Hash, _Pred, _Alloc > - A standard container composed of equivalent keys (possibly containing multiple of each key value) in which the elements' keys are the elements themselves.

SYNOPSIS

Public Types


using node_type = typename _Hashtable::node_type



typedef _Hashtable::key_type key_type
Public typedefs. typedef _Hashtable::value_type value_type
Public typedefs. typedef _Hashtable::hasher hasher
Public typedefs. typedef _Hashtable::key_equal key_equal
Public typedefs. typedef _Hashtable::allocator_type allocator_type
Public typedefs.



typedef _Hashtable::pointer pointer
Iterator-related typedefs. typedef _Hashtable::const_pointer const_pointer
Iterator-related typedefs. typedef _Hashtable::reference reference
Iterator-related typedefs. typedef _Hashtable::const_reference const_reference
Iterator-related typedefs. typedef _Hashtable::iterator iterator
Iterator-related typedefs. typedef _Hashtable::const_iterator const_iterator
Iterator-related typedefs. typedef _Hashtable::local_iterator local_iterator
Iterator-related typedefs. typedef _Hashtable::const_local_iterator const_local_iterator
Iterator-related typedefs. typedef _Hashtable::size_type size_type
Iterator-related typedefs. typedef _Hashtable::difference_type difference_type
Iterator-related typedefs.

Public Member Functions


unordered_multiset ()=default
Default constructor. template<typename _InputIterator > unordered_multiset (_InputIterator __first, _InputIterator __last, size_type __n, const allocator_type &__a)
template<typename _InputIterator > unordered_multiset (_InputIterator __first, _InputIterator __last, size_type __n, const hasher &__hf, const allocator_type &__a)
template<typename _InputIterator > unordered_multiset (_InputIterator __first, _InputIterator __last, size_type __n=0, const hasher &__hf=hasher(), const key_equal &__eql=key_equal(), const allocator_type &__a=allocator_type())
Builds an unordered_multiset from a range. unordered_multiset (const allocator_type &__a)
Creates an unordered_multiset with no elements. unordered_multiset (const unordered_multiset &)=default
Copy constructor. unordered_multiset (const unordered_multiset &__umset, const allocator_type &__a)
unordered_multiset (initializer_list< value_type > __l, size_type __n, const allocator_type &__a)
unordered_multiset (initializer_list< value_type > __l, size_type __n, const hasher &__hf, const allocator_type &__a)
unordered_multiset (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())
Builds an unordered_multiset from an initializer_list. unordered_multiset (size_type __n, const allocator_type &__a)
unordered_multiset (size_type __n, const hasher &__hf, const allocator_type &__a)
unordered_multiset (size_type __n, const hasher &__hf=hasher(), const key_equal &__eql=key_equal(), const allocator_type &__a=allocator_type())
Default constructor creates no elements. unordered_multiset (unordered_multiset &&)=default
Move constructor. unordered_multiset (unordered_multiset &&__umset, const allocator_type &__a) noexcept(noexcept(_Hashtable(std::move(__umset._M_h), __a)))
size_type bucket (const key_type &__key) const
size_type bucket_count () const noexcept
Returns the number of buckets of the unordered_multiset. size_type bucket_size (size_type __n) const
const_iterator cbegin () const noexcept
const_iterator cend () const noexcept
void clear () noexcept
template<typename... _Args> iterator emplace (_Args &&... __args)
Builds and insert an element into the unordered_multiset. template<typename... _Args> iterator emplace_hint (const_iterator __pos, _Args &&... __args)
Inserts an element into the unordered_multiset. bool empty () const noexcept
Returns true if the unordered_multiset is empty. size_type erase (const key_type &__x)
Erases elements according to the provided key. iterator erase (const_iterator __first, const_iterator __last)
Erases a [__first,__last) range of elements from an unordered_multiset. node_type extract (const key_type &__key)
Extract a node. node_type extract (const_iterator __pos)
Extract a node. allocator_type get_allocator () const noexcept
Returns the allocator object used by the unordered_multiset. hasher hash_function () const
Returns the hash functor object with which the unordered_multiset was constructed. template<typename _InputIterator > void insert (_InputIterator __first, _InputIterator __last)
A template function that inserts a range of elements. iterator insert (const_iterator __hint, node_type &&__nh)
Re-insert an extracted node. void insert (initializer_list< value_type > __l)
Inserts a list of elements into the unordered_multiset. iterator insert (node_type &&__nh)
Re-insert an extracted node. key_equal key_eq () const
Returns the key comparison object with which the unordered_multiset was constructed. float load_factor () const noexcept
Returns the average number of elements per bucket. size_type max_bucket_count () const noexcept
Returns the maximum number of buckets of the unordered_multiset. float max_load_factor () const noexcept
Returns a positive number that the unordered_multiset tries to keep the load factor less than or equal to. void max_load_factor (float __z)
Change the unordered_multiset maximum load factor. size_type max_size () const noexcept
Returns the maximum size of the unordered_multiset. template<typename _H2 , typename _P2 > void merge (unordered_multiset< _Value, _H2, _P2, _Alloc > &&__source)
template<typename _H2 , typename _P2 > void merge (unordered_multiset< _Value, _H2, _P2, _Alloc > &__source)
template<typename _H2 , typename _P2 > void merge (unordered_set< _Value, _H2, _P2, _Alloc > &&__source)
template<typename _H2 , typename _P2 > void merge (unordered_set< _Value, _H2, _P2, _Alloc > &__source)
unordered_multiset & operator= (const unordered_multiset &)=default
Copy assignment operator. unordered_multiset & operator= (initializer_list< value_type > __l)
Unordered_multiset list assignment operator. unordered_multiset & operator= (unordered_multiset &&)=default
Move assignment operator. void rehash (size_type __n)
May rehash the unordered_multiset. void reserve (size_type __n)
Prepare the unordered_multiset for a specified number of elements. size_type size () const noexcept
Returns the size of the unordered_multiset. void swap (unordered_multiset &__x) noexcept(noexcept(_M_h.swap(__x._M_h)))
Swaps data with another unordered_multiset.



iterator begin () noexcept
const_iterator begin () const noexcept




iterator end () noexcept
const_iterator end () const noexcept




iterator insert (const value_type &__x)
Inserts an element into the unordered_multiset. iterator insert (value_type &&__x)
Inserts an element into the unordered_multiset.



iterator insert (const_iterator __hint, const value_type &__x)
Inserts an element into the unordered_multiset. iterator insert (const_iterator __hint, value_type &&__x)
Inserts an element into the unordered_multiset.



iterator erase (const_iterator __position)
Erases an element from an unordered_multiset. iterator erase (iterator __position)
Erases an element from an unordered_multiset.



iterator find (const key_type &__x)
Tries to locate an element in an unordered_multiset. const_iterator find (const key_type &__x) const
Tries to locate an element in an unordered_multiset.



size_type count (const key_type &__x) const
Finds the number of elements.



std::pair< iterator, iterator > equal_range (const key_type &__x)
Finds a subsequence matching given key. std::pair< const_iterator, const_iterator > equal_range (const key_type &__x) const
Finds a subsequence matching given key.



local_iterator begin (size_type __n)
Returns a read-only (constant) iterator pointing to the first bucket element. const_local_iterator begin (size_type __n) const
Returns a read-only (constant) iterator pointing to the first bucket element. const_local_iterator cbegin (size_type __n) const
Returns a read-only (constant) iterator pointing to the first bucket element.



local_iterator end (size_type __n)
Returns a read-only (constant) iterator pointing to one past the last bucket elements. const_local_iterator end (size_type __n) const
Returns a read-only (constant) iterator pointing to one past the last bucket elements. const_local_iterator cend (size_type __n) const
Returns a read-only (constant) iterator pointing to one past the last bucket elements.

Friends


template<typename _Value1 , typename _Hash1 , typename _Pred1 , typename _Alloc1 > bool operator== (const unordered_multiset< _Value1, _Hash1, _Pred1, _Alloc1 > &, const unordered_multiset< _Value1, _Hash1, _Pred1, _Alloc1 > &)
template<typename , typename , typename > class std::_Hash_merge_helper

Detailed Description

template<typename _Value, typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>>

class std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >" A standard container composed of equivalent keys (possibly containing multiple of each key value) in which the elements' keys are the elements themselves.

Template Parameters

_Value Type of key objects.
_Hash Hashing function object type, defaults to hash<_Value>.
_Pred Predicate function object type, defaults to equal_to<_Value>.
_Alloc Allocator type, defaults to allocator<_Key>.

Meets the requirements of a container, and unordered associative container

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

Definition at line 963 of file unordered_set.h.

Member Typedef Documentation

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> typedef _Hashtable::allocator_type std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::allocator_type

Public typedefs.

Definition at line 976 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> typedef _Hashtable::const_iterator std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::const_iterator

Iterator-related typedefs.

Definition at line 986 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> typedef _Hashtable::const_local_iterator std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::const_local_iterator

Iterator-related typedefs.

Definition at line 988 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> typedef _Hashtable::const_pointer std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::const_pointer

Iterator-related typedefs.

Definition at line 982 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> typedef _Hashtable::const_reference std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::const_reference

Iterator-related typedefs.

Definition at line 984 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> typedef _Hashtable::difference_type std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::difference_type

Iterator-related typedefs.

Definition at line 990 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> typedef _Hashtable::hasher std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::hasher

Public typedefs.

Definition at line 974 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> typedef _Hashtable::iterator std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::iterator

Iterator-related typedefs.

Definition at line 985 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> typedef _Hashtable::key_equal std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::key_equal

Public typedefs.

Definition at line 975 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> typedef _Hashtable::key_type std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::key_type

Public typedefs.

Definition at line 972 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> typedef _Hashtable::local_iterator std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::local_iterator

Iterator-related typedefs.

Definition at line 987 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> typedef _Hashtable::pointer std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::pointer

Iterator-related typedefs.

Definition at line 981 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> typedef _Hashtable::reference std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::reference

Iterator-related typedefs.

Definition at line 983 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> typedef _Hashtable::size_type std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::size_type

Iterator-related typedefs.

Definition at line 989 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> typedef _Hashtable::value_type std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::value_type

Public typedefs.

Definition at line 973 of file unordered_set.h.

Constructor & Destructor Documentation

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::unordered_multiset () [default]

Default constructor.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::unordered_multiset (size_type __n, const hasher & __hf = hasher(), const key_equal & __eql = key_equal(), const allocator_type & __a = allocator_type()) [inline], [explicit]

Default constructor creates no elements.

Parameters

__n Minimal initial number of buckets.
__hf A hash functor.
__eql A key equality functor.
__a An allocator object.

Definition at line 1010 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> template<typename _InputIterator > std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::unordered_multiset (_InputIterator __first, _InputIterator __last, size_type __n = 0, const hasher & __hf = hasher(), const key_equal & __eql = key_equal(), const allocator_type & __a = allocator_type()) [inline]

Builds an unordered_multiset from a range.

Parameters

__first An input iterator.
__last An input iterator.
__n Minimal initial number of buckets.
__hf A hash functor.
__eql A key equality functor.
__a An allocator object.

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

Definition at line 1031 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::unordered_multiset (const unordered_multiset< _Value, _Hash, _Pred, _Alloc > &) [default]

Copy constructor.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::unordered_multiset (unordered_multiset< _Value, _Hash, _Pred, _Alloc > &&) [default]

Move constructor.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::unordered_multiset (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_multiset from an initializer_list.

Parameters

__l An initializer_list.
__n Minimal initial number of buckets.
__hf A hash functor.
__eql A key equality functor.
__a An allocator object.

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

Definition at line 1056 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::unordered_multiset (const allocator_type & __a) [inline], [explicit]

Creates an unordered_multiset with no elements.

Parameters

__a An allocator object.

Definition at line 1077 of file unordered_set.h.

Member Function Documentation

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> const_iterator std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::begin () const [inline], [noexcept]

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

Definition at line 1189 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> iterator std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::begin () [inline], [noexcept]

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

Definition at line 1185 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> local_iterator std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::begin (size_type __n) [inline]

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

Parameters

__n The bucket index.

Returns

A read-only local iterator.

Definition at line 1631 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> const_local_iterator std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::begin (size_type __n) const [inline]

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

Parameters

__n The bucket index.

Returns

A read-only local iterator.

Definition at line 1635 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> size_type std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::bucket_count () const [inline], [noexcept]

Returns the number of buckets of the unordered_multiset.

Definition at line 1597 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> const_iterator std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::cbegin () const [inline], [noexcept]

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

Definition at line 1212 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> const_local_iterator std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::cbegin (size_type __n) const [inline]

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

Parameters

__n The bucket index.

Returns

A read-only local iterator.

Definition at line 1639 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> const_iterator std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::cend () const [inline], [noexcept]

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

Definition at line 1220 of file unordered_set.h.

Referenced by std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::insert().

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> const_local_iterator std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::cend (size_type __n) const [inline]

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

Parameters

__n The bucket index.

Returns

A read-only local iterator.

Definition at line 1659 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> void std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::clear () [inline], [noexcept]

Erases all elements in an unordered_multiset.

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 1421 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> size_type std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::count (const key_type & __x) const [inline]

Finds the number of elements.

Parameters

__x Element to located.

Returns

Number of elements with specified key.

Definition at line 1531 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> template<typename... _Args> iterator std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::emplace (_Args &&... __args) [inline]

Builds and insert an element into the unordered_multiset.

Parameters

__args Arguments used to generate an element.

Returns

An iterator that points to the inserted element.

Insertion requires amortized constant time.

Definition at line 1234 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> template<typename... _Args> iterator std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::emplace_hint (const_iterator __pos, _Args &&... __args) [inline]

Inserts an element into the unordered_multiset.

Parameters

__pos An iterator that serves as a hint as to where the element should be inserted.
__args Arguments used to generate the element to be inserted.

Returns

An iterator that points to the inserted element.

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.

For more on hinting, see: https://gcc.gnu.org/onlinedocs/libstdc++/manual/associative.html#containers.associative.insert_hints

Insertion requires amortized constant time.

Definition at line 1256 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> bool std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::empty () const [inline], [noexcept]

Returns true if the unordered_multiset is empty.

Definition at line 1164 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> const_iterator std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::end () const [inline], [noexcept]

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

Definition at line 1203 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> iterator std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::end () [inline], [noexcept]

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

Definition at line 1199 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> local_iterator std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::end (size_type __n) [inline]

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

Parameters

__n The bucket index.

Returns

A read-only local iterator.

Definition at line 1651 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> const_local_iterator std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::end (size_type __n) const [inline]

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

Parameters

__n The bucket index.

Returns

A read-only local iterator.

Definition at line 1655 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> std::pair<iterator, iterator> std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::equal_range (const key_type & __x) [inline]

Finds a subsequence matching given key.

Parameters

__x Key to be located.

Returns

Pair of iterators that possibly points to the subsequence matching given key.

Definition at line 1569 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> std::pair<const_iterator, const_iterator> std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::equal_range (const key_type & __x) const [inline]

Finds a subsequence matching given key.

Parameters

__x Key to be located.

Returns

Pair of iterators that possibly points to the subsequence matching given key.

Definition at line 1581 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> size_type std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::erase (const key_type & __x) [inline]

Erases elements according to the provided key.

Parameters

__x Key of element to be erased.

Returns

The number of elements erased.

This function erases all the elements located by the given key from an unordered_multiset.

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 1390 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> iterator std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::erase (const_iterator __first, const_iterator __last) [inline]

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

Parameters

__first Iterator pointing to the start of the range to be erased.
__last Iterator pointing to the end of the range to be erased.

Returns

The iterator __last.

This function erases a sequence of elements from an unordered_multiset.

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 1410 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> iterator std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::erase (const_iterator __position) [inline]

Erases an element from an unordered_multiset.

Parameters

__position An iterator pointing to the element to be erased.

Returns

An iterator pointing to the element immediately following __position prior to the element being erased. If no such element exists, end() is returned.

This function erases an element, pointed to by the given iterator, from an unordered_multiset.

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 1367 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> iterator std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::erase (iterator __position) [inline]

Erases an element from an unordered_multiset.

Parameters

__position An iterator pointing to the element to be erased.

Returns

An iterator pointing to the element immediately following __position prior to the element being erased. If no such element exists, end() is returned.

This function erases an element, pointed to by the given iterator, from an unordered_multiset.

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 1372 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> node_type std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::extract (const key_type & __key) [inline]

Extract a node.

Definition at line 1337 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> node_type std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::extract (const_iterator __pos) [inline]

Extract a node.

Definition at line 1329 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> iterator std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::find (const key_type & __x) [inline]

Tries to locate an element in an unordered_multiset.

Parameters

__x Element to be located.

Returns

Iterator pointing to sought-after element, or end() if not found.

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 1500 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> const_iterator std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::find (const key_type & __x) const [inline]

Tries to locate an element in an unordered_multiset.

Parameters

__x Element to be located.

Returns

Iterator pointing to sought-after element, or end() if not found.

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 1512 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> allocator_type std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::get_allocator () const [inline], [noexcept]

Returns the allocator object used by the unordered_multiset.

Definition at line 1157 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> hasher std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::hash_function () const [inline]

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

Definition at line 1476 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> template<typename _InputIterator > void std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::insert (_InputIterator __first, _InputIterator __last) [inline]

A template function that inserts a range of elements.

Parameters

__first Iterator pointing to the start of the range to be inserted.
__last Iterator pointing to the end of the range.

Complexity similar to that of the range constructor.

Definition at line 1312 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> iterator std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::insert (const value_type & __x) [inline]

Inserts an element into the unordered_multiset.

Parameters

__x Element to be inserted.

Returns

An iterator that points to the inserted element.

Insertion requires amortized constant time.

Definition at line 1268 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> iterator std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::insert (const_iterator __hint, const value_type & __x) [inline]

Inserts an element into the unordered_multiset.

Parameters

__hint An iterator that serves as a hint as to where the element should be inserted.
__x Element to be inserted.

Returns

An iterator that points to the inserted element.

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.

For more on hinting, see: https://gcc.gnu.org/onlinedocs/libstdc++/manual/associative.html#containers.associative.insert_hints

Insertion requires amortized constant.

Definition at line 1294 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> iterator std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::insert (const_iterator __hint, node_type && __nh) [inline]

Re-insert an extracted node.

Definition at line 1347 of file unordered_set.h.

References std::_Hashtable< _Key, _Value, _Alloc, _ExtractKey, _Equal, _Hash, _RangeHash, _Unused, _RehashPolicy, _Traits >::_M_reinsert_node_multi(), and std::move().

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> iterator std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::insert (const_iterator __hint, value_type && __x) [inline]

Inserts an element into the unordered_multiset.

Parameters

__hint An iterator that serves as a hint as to where the element should be inserted.
__x Element to be inserted.

Returns

An iterator that points to the inserted element.

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.

For more on hinting, see: https://gcc.gnu.org/onlinedocs/libstdc++/manual/associative.html#containers.associative.insert_hints

Insertion requires amortized constant.

Definition at line 1298 of file unordered_set.h.

References std::move().

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> void std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::insert (initializer_list< value_type > __l) [inline]

Inserts a list of elements into the unordered_multiset.

Parameters

__l A std::initializer_list<value_type> of elements to be inserted.

Complexity similar to that of the range constructor.

Definition at line 1323 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> iterator std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::insert (node_type && __nh) [inline]

Re-insert an extracted node.

Definition at line 1342 of file unordered_set.h.

References std::_Hashtable< _Key, _Value, _Alloc, _ExtractKey, _Equal, _Hash, _RangeHash, _Unused, _RehashPolicy, _Traits >::_M_reinsert_node_multi(), std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::cend(), and std::move().

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> iterator std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::insert (value_type && __x) [inline]

Inserts an element into the unordered_multiset.

Parameters

__x Element to be inserted.

Returns

An iterator that points to the inserted element.

Insertion requires amortized constant time.

Definition at line 1272 of file unordered_set.h.

References std::move().

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> key_equal std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::key_eq () const [inline]

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

Definition at line 1482 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> float std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::load_factor () const [inline], [noexcept]

Returns the average number of elements per bucket.

Definition at line 1667 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> size_type std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::max_bucket_count () const [inline], [noexcept]

Returns the maximum number of buckets of the unordered_multiset.

Definition at line 1602 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> float std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::max_load_factor () const [inline], [noexcept]

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

Definition at line 1673 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> void std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::max_load_factor (float __z) [inline]

Change the unordered_multiset maximum load factor.

Parameters

__z The new maximum load factor.

Definition at line 1681 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> size_type std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::max_size () const [inline], [noexcept]

Returns the maximum size of the unordered_multiset.

Definition at line 1174 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> unordered_multiset& std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::operator= (const unordered_multiset< _Value, _Hash, _Pred, _Alloc > &) [default]

Copy assignment operator.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> unordered_multiset& std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::operator= (initializer_list< value_type > __l) [inline]

Unordered_multiset list assignment operator.

Parameters

__l An initializer_list.

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

Note that the assignment completely changes the unordered_multiset and that the resulting unordered_multiset's size is the same as the number of elements assigned.

Definition at line 1149 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> unordered_multiset& std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::operator= (unordered_multiset< _Value, _Hash, _Pred, _Alloc > &&) [default]

Move assignment operator.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> void std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::rehash (size_type __n) [inline]

May rehash the unordered_multiset.

Parameters

__n The new number of buckets.

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

Definition at line 1692 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> void std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::reserve (size_type __n) [inline]

Prepare the unordered_multiset for a specified number of elements.

Parameters

__n Number of elements required.

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

Definition at line 1703 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> size_type std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::size () const [inline], [noexcept]

Returns the size of the unordered_multiset.

Definition at line 1169 of file unordered_set.h.

template<typename _Value , typename _Hash = hash<_Value>, typename _Pred = equal_to<_Value>, typename _Alloc = allocator<_Value>> void std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::swap (unordered_multiset< _Value, _Hash, _Pred, _Alloc > & __x) [inline], [noexcept]

Swaps data with another unordered_multiset.

Parameters

__x An unordered_multiset of the same element and allocator types.

This exchanges the elements between two sets in constant time. Note that the global std::swap() function is specialized such that std::swap(s1,s2) will feed to this function.

Definition at line 1434 of file unordered_set.h.

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