std::unordered_multiset man page

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

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.
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.
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 unordered_multiset &)=default
Copy constructor.
unordered_multiset (unordered_multiset &&)=default
Move constructor.
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 (const allocator_type &__a)
Creates an unordered_multiset with no elements.
unordered_multiset (const unordered_multiset &__umset, const allocator_type &__a)
unordered_multiset (unordered_multiset &&__umset, const allocator_type &__a)
unordered_multiset (size_type __n, const allocator_type &__a)
unordered_multiset (size_type __n, const hasher &__hf, const allocator_type &__a)
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)
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)
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
size_type count (const key_type &__x) const
Finds the number of elements.
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.
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.
void insert (initializer_list< value_type > __l)
Inserts a list of elements into the unordered_multiset.
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.
unordered_multiset & operator= (const unordered_multiset &)=default
Copy assignment operator.
unordered_multiset & operator= (unordered_multiset &&)=default
Move assignment operator.
unordered_multiset & operator= (initializer_list< value_type > __l)
Unordered_multiset list 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.

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 > &)

Detailed Description

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 69 of file unordered_set.h.

Member Typedef Documentation

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

Public typedefs.

Definition at line 843 of file unordered_set.h.

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

Iterator-related typedefs.

Definition at line 853 of file unordered_set.h.

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

Iterator-related typedefs.

Definition at line 855 of file unordered_set.h.

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

Iterator-related typedefs.

Definition at line 849 of file unordered_set.h.

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

Iterator-related typedefs.

Definition at line 851 of file unordered_set.h.

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

Iterator-related typedefs.

Definition at line 857 of file unordered_set.h.

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

Public typedefs.

Definition at line 841 of file unordered_set.h.

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

Iterator-related typedefs.

Definition at line 852 of file unordered_set.h.

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

Public typedefs.

Definition at line 842 of file unordered_set.h.

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

Public typedefs.

Definition at line 839 of file unordered_set.h.

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

Iterator-related typedefs.

Definition at line 854 of file unordered_set.h.

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

Iterator-related typedefs.

Definition at line 848 of file unordered_set.h.

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

Iterator-related typedefs.

Definition at line 850 of file unordered_set.h.

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

Iterator-related typedefs.

Definition at line 856 of file unordered_set.h.

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

Public typedefs.

Definition at line 840 of file unordered_set.h.

Constructor & Destructor Documentation

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

Default constructor.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 877 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 898 of file unordered_set.h.

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

Copy constructor.

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

Move constructor.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 923 of file unordered_set.h.

References std::unordered_set< _Value, _Hash, _Pred, _Alloc >::operator=().

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 944 of file unordered_set.h.

Member Function Documentation

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1051 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1055 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1437 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1441 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1403 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1078 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1445 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1086 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1465 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1287 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1380 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1100 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1122 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1030 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1065 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1069 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1457 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1461 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1391 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1395 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1233 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1238 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1256 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1276 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1366 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1370 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1023 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1342 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1134 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1138 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1160 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1164 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1178 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1189 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1348 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1473 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1408 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1479 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1487 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1040 of file unordered_set.h.

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

Copy assignment operator.

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

Move assignment operator.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1015 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1498 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1509 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1035 of file unordered_set.h.

template<class _Value, class _Hash = hash<_Value>, class _Pred = std::equal_to<_Value>, class _Alloc = std::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 1300 of file unordered_set.h.

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Thu May 4 2017 libstdc++