#include <set>

Public Types
typedef _Alloc	allocator_type

typedef _Rep_type::const_iterator	const_iterator

typedef _Alloc_traits::const_pointer	const_pointer

typedef _Alloc_traits::const_reference	const_reference

typedef _Rep_type::const_reverse_iterator	const_reverse_iterator

typedef _Rep_type::difference_type	difference_type

typedef _Rep_type::const_iterator	iterator

typedef _Compare	key_compare

typedef _Key	key_type

using	node_type = typename _Rep_type::node_type

typedef _Alloc_traits::pointer	pointer

typedef _Alloc_traits::reference	reference

typedef _Rep_type::const_reverse_iterator	reverse_iterator

typedef _Rep_type::size_type	size_type

typedef _Compare	value_compare

typedef _Key	value_type

Public Member Functions
	multiset ()=default

template<typename _InputIterator >
	multiset (_InputIterator __first, _InputIterator __last)

template<typename _InputIterator >
	multiset (_InputIterator __first, _InputIterator __last, const _Compare &__comp, const allocator_type &__a=allocator_type())

template<typename _InputIterator >
	multiset (_InputIterator __first, _InputIterator __last, const allocator_type &__a)

	multiset (const _Compare &__comp, const allocator_type &__a=allocator_type())

	multiset (const allocator_type &__a)

	multiset (const multiset &)=default

	multiset (const multiset &__m, const __type_identity_t< allocator_type > &__a)

	multiset (initializer_list< value_type > __l, const _Compare &__comp=_Compare(), const allocator_type &__a=allocator_type())

	multiset (initializer_list< value_type > __l, const allocator_type &__a)

	multiset (multiset &&)=default

	multiset (multiset &&__m, const __type_identity_t< allocator_type > &__a) noexcept(is_nothrow_copy_constructible< _Compare >::value &&_Alloc_traits::_S_always_equal())

	~multiset ()=default

iterator	begin () const noexcept

iterator	cbegin () const noexcept

iterator	cend () const noexcept

void	clear () noexcept

reverse_iterator	crbegin () const noexcept

reverse_iterator	crend () const noexcept

template<typename... _Args>
iterator	emplace (_Args &&... __args)

template<typename... _Args>
iterator	emplace_hint (const_iterator __pos, _Args &&... __args)

bool	empty () const noexcept

iterator	end () const noexcept

size_type	erase (const key_type &__x)

_GLIBCXX_ABI_TAG_CXX11 iterator	erase (const_iterator __first, const_iterator __last)

_GLIBCXX_ABI_TAG_CXX11 iterator	erase (const_iterator __position)

node_type	extract (const key_type &__x)

node_type	extract (const_iterator __pos)

allocator_type	get_allocator () const noexcept

template<typename _InputIterator >
void	insert (_InputIterator __first, _InputIterator __last)

iterator	insert (const value_type &__x)

iterator	insert (const_iterator __hint, node_type &&__nh)

iterator	insert (const_iterator __position, const value_type &__x)

iterator	insert (const_iterator __position, value_type &&__x)

void	insert (initializer_list< value_type > __l)

iterator	insert (node_type &&__nh)

iterator	insert (value_type &&__x)

key_compare	key_comp () const

size_type	max_size () const noexcept

template<typename _Compare1 >
void	merge (multiset< _Key, _Compare1, _Alloc > &&__source)

template<typename _Compare1 >
void	merge (multiset< _Key, _Compare1, _Alloc > &__source)

template<typename _Compare1 >
void	merge (set< _Key, _Compare1, _Alloc > &&__source)

template<typename _Compare1 >
void	merge (set< _Key, _Compare1, _Alloc > &__source)

multiset &	operator= (const multiset &)=default

multiset &	operator= (initializer_list< value_type > __l)

multiset &	operator= (multiset &&)=default

reverse_iterator	rbegin () const noexcept

reverse_iterator	rend () const noexcept

size_type	size () const noexcept

void	swap (multiset &__x) noexcept(/conditional /)

value_compare	value_comp () const


size_type	count (const key_type &__x) const

template<typename _Kt >
auto	count (const _Kt &__x) const -> decltype(_M_t._M_count_tr(__x))


bool	contains (const key_type &__x) const

template<typename _Kt >
auto	contains (const _Kt &__x) const -> decltype(_M_t._M_find_tr(__x), void(), true)


iterator	find (const key_type &__x)

const_iterator	find (const key_type &__x) const

template<typename _Kt >
auto	find (const _Kt &__x) -> decltype(iterator{_M_t._M_find_tr(__x)})

template<typename _Kt >
auto	find (const _Kt &__x) const -> decltype(const_iterator{_M_t._M_find_tr(__x)})


iterator	lower_bound (const key_type &__x)

const_iterator	lower_bound (const key_type &__x) const

template<typename _Kt >
auto	lower_bound (const _Kt &__x) -> decltype(iterator(_M_t._M_lower_bound_tr(__x)))

template<typename _Kt >
auto	lower_bound (const _Kt &__x) const -> decltype(iterator(_M_t._M_lower_bound_tr(__x)))


iterator	upper_bound (const key_type &__x)

const_iterator	upper_bound (const key_type &__x) const

template<typename _Kt >
auto	upper_bound (const _Kt &__x) -> decltype(iterator(_M_t._M_upper_bound_tr(__x)))

template<typename _Kt >
auto	upper_bound (const _Kt &__x) const -> decltype(iterator(_M_t._M_upper_bound_tr(__x)))


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

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

template<typename _Kt >
auto	equal_range (const _Kt &__x) -> decltype(pair< iterator, iterator >(_M_t._M_equal_range_tr(__x)))

template<typename _Kt >
auto	equal_range (const _Kt &__x) const -> decltype(pair< iterator, iterator >(_M_t._M_equal_range_tr(__x)))

Friends
template<typename _K1 , typename _C1 , typename _A1 >
bool	operator< (const multiset< _K1, _C1, _A1 > &, const multiset< _K1, _C1, _A1 > &)

template<typename _K1 , typename _C1 , typename _A1 >
bool	operator== (const multiset< _K1, _C1, _A1 > &, const multiset< _K1, _C1, _A1 > &)

template<typename , typename >
struct	std::_Rb_tree_merge_helper

Detailed Description

template<typename _Key, typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>
class std::multiset< _Key, _Compare, _Alloc >

A standard container made up of elements, which can be retrieved in logarithmic time.

Since: C++98

Template Parameters

_Key	Type of key objects.
_Compare	Comparison function object type, defaults to less<_Key>.
_Alloc	Allocator type, defaults to allocator<_Key>.

Meets the requirements of a container, a reversible container, and an associative container (using equivalent keys). For a multiset<Key> the key_type and value_type are Key.

Multisets support bidirectional iterators.

The private tree data is declared exactly the same way for set and multiset; the distinction is made entirely in how the tree functions are called (*_unique versus *_equal, same as the standard).

Definition at line 97 of file stl_multiset.h.

Member Typedef Documentation

◆ allocator_type

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

typedef _Alloc std::multiset< _Key, _Compare, _Alloc >::allocator_type

Definition at line 125 of file stl_multiset.h.

◆ const_iterator

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

typedef _Rep_type::const_iterator std::multiset< _Key, _Compare, _Alloc >::const_iterator

Definition at line 148 of file stl_multiset.h.

◆ const_pointer

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

typedef _Alloc_traits::const_pointer std::multiset< _Key, _Compare, _Alloc >::const_pointer

Definition at line 141 of file stl_multiset.h.

◆ const_reference

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

typedef _Alloc_traits::const_reference std::multiset< _Key, _Compare, _Alloc >::const_reference

Definition at line 143 of file stl_multiset.h.

◆ const_reverse_iterator

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

typedef _Rep_type::const_reverse_iterator std::multiset< _Key, _Compare, _Alloc >::const_reverse_iterator

Definition at line 150 of file stl_multiset.h.

◆ difference_type

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

typedef _Rep_type::difference_type std::multiset< _Key, _Compare, _Alloc >::difference_type

Definition at line 152 of file stl_multiset.h.

◆ iterator

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

typedef _Rep_type::const_iterator std::multiset< _Key, _Compare, _Alloc >::iterator

Definition at line 147 of file stl_multiset.h.

◆ key_compare

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

typedef _Compare std::multiset< _Key, _Compare, _Alloc >::key_compare

Definition at line 123 of file stl_multiset.h.

◆ key_type

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

typedef _Key std::multiset< _Key, _Compare, _Alloc >::key_type

Definition at line 121 of file stl_multiset.h.

◆ node_type

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

using std::multiset< _Key, _Compare, _Alloc >::node_type = typename _Rep_type::node_type

Definition at line 155 of file stl_multiset.h.

◆ pointer

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

typedef _Alloc_traits::pointer std::multiset< _Key, _Compare, _Alloc >::pointer

Definition at line 140 of file stl_multiset.h.

◆ reference

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

typedef _Alloc_traits::reference std::multiset< _Key, _Compare, _Alloc >::reference

Definition at line 142 of file stl_multiset.h.

◆ reverse_iterator

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

typedef _Rep_type::const_reverse_iterator std::multiset< _Key, _Compare, _Alloc >::reverse_iterator

Definition at line 149 of file stl_multiset.h.

◆ size_type

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

typedef _Rep_type::size_type std::multiset< _Key, _Compare, _Alloc >::size_type

Definition at line 151 of file stl_multiset.h.

◆ value_compare

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

typedef _Compare std::multiset< _Key, _Compare, _Alloc >::value_compare

Definition at line 124 of file stl_multiset.h.

◆ value_type

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

typedef _Key std::multiset< _Key, _Compare, _Alloc >::value_type

Definition at line 122 of file stl_multiset.h.

Constructor & Destructor Documentation

◆ multiset() [1/12]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

std::multiset< _Key, _Compare, _Alloc >::multiset ( )

default

Default constructor creates no elements.

◆ multiset() [2/12]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

std::multiset< _Key, _Compare, _Alloc >::multiset	(	const _Compare &	__comp,
		const allocator_type &	__a = `allocator_type()`
	)

inlineexplicit

Creates a multiset with no elements.

Parameters

__comp	Comparator to use.
__a	An allocator object.

Definition at line 174 of file stl_multiset.h.

◆ multiset() [3/12]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

template<typename _InputIterator >

std::multiset< _Key, _Compare, _Alloc >::multiset	(	_InputIterator	__first,
		_InputIterator	__last
	)

inline

Builds a multiset from a range.

Parameters

__first	An input iterator.
__last	An input iterator.

Create a multiset consisting of copies of the elements from [first,last). This is linear in N if the range is already sorted, and NlogN otherwise (where N is distance(__first,__last)).

Definition at line 188 of file stl_multiset.h.

◆ multiset() [4/12]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

template<typename _InputIterator >

std::multiset< _Key, _Compare, _Alloc >::multiset	(	_InputIterator	__first,
		_InputIterator	__last,
		const _Compare &	__comp,
		const allocator_type &	__a = `allocator_type()`
	)

inline

Builds a multiset from a range.

Parameters

__first	An input iterator.
__last	An input iterator.
__comp	A comparison functor.
__a	An allocator object.

Create a multiset consisting of copies of the elements from [__first,__last). This is linear in N if the range is already sorted, and NlogN otherwise (where N is distance(__first,__last)).

Definition at line 204 of file stl_multiset.h.

◆ multiset() [5/12]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

std::multiset< _Key, _Compare, _Alloc >::multiset ( const multiset< _Key, _Compare, _Alloc > & )

default

Multiset copy constructor.

Whether the allocator is copied depends on the allocator traits.

◆ multiset() [6/12]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

std::multiset< _Key, _Compare, _Alloc >::multiset ( multiset< _Key, _Compare, _Alloc > && )

default

Multiset move constructor.

The newly-created multiset contains the exact contents of the moved instance. The moved instance is a valid, but unspecified multiset.

◆ multiset() [7/12]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

std::multiset< _Key, _Compare, _Alloc >::multiset	(	initializer_list< value_type >	__l,
		const _Compare &	__comp = `_Compare()`,
		const allocator_type &	__a = `allocator_type()`
	)

inline

Builds a multiset from an initializer_list.

Parameters

__l	An initializer_list.
__comp	A comparison functor.
__a	An allocator object.

Create a multiset consisting of copies of the elements from the list. This is linear in N if the list is already sorted, and NlogN otherwise (where N is __l.size()).

Definition at line 240 of file stl_multiset.h.

◆ multiset() [8/12]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

std::multiset< _Key, _Compare, _Alloc >::multiset ( const allocator_type & __a )

inlineexplicit

Allocator-extended default constructor.

Definition at line 248 of file stl_multiset.h.

◆ multiset() [9/12]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

std::multiset< _Key, _Compare, _Alloc >::multiset	(	const multiset< _Key, _Compare, _Alloc > &	__m,
		const __type_identity_t< allocator_type > &	__a
	)

inline

Allocator-extended copy constructor.

Definition at line 252 of file stl_multiset.h.

◆ multiset() [10/12]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

std::multiset< _Key, _Compare, _Alloc >::multiset	(	multiset< _Key, _Compare, _Alloc > &&	__m,
		const __type_identity_t< allocator_type > &	__a
	)

inlinenoexcept

Allocator-extended move constructor.

Definition at line 257 of file stl_multiset.h.

◆ multiset() [11/12]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

std::multiset< _Key, _Compare, _Alloc >::multiset	(	initializer_list< value_type >	__l,
		const allocator_type &	__a
	)

inline

Allocator-extended initialier-list constructor.

Definition at line 263 of file stl_multiset.h.

◆ multiset() [12/12]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

template<typename _InputIterator >

std::multiset< _Key, _Compare, _Alloc >::multiset	(	_InputIterator	__first,
		_InputIterator	__last,
		const allocator_type &	__a
	)

inline

Allocator-extended range constructor.

Definition at line 269 of file stl_multiset.h.

◆ ~multiset()

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

std::multiset< _Key, _Compare, _Alloc >::~multiset ( )

default

The dtor only erases the elements, and note 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.

Member Function Documentation

◆ begin()

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

iterator std::multiset< _Key, _Compare, _Alloc >::begin ( ) const

inlinenoexcept

Returns a read-only (constant) iterator that points to the first element in the multiset. Iteration is done in ascending order according to the keys.

Definition at line 342 of file stl_multiset.h.

◆ cbegin()

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

iterator std::multiset< _Key, _Compare, _Alloc >::cbegin ( ) const

inlinenoexcept

Returns a read-only (constant) iterator that points to the first element in the multiset. Iteration is done in ascending order according to the keys.

Definition at line 379 of file stl_multiset.h.

◆ cend()

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

iterator std::multiset< _Key, _Compare, _Alloc >::cend ( ) const

inlinenoexcept

Returns a read-only (constant) iterator that points one past the last element in the multiset. Iteration is done in ascending order according to the keys.

Definition at line 388 of file stl_multiset.h.

◆ clear()

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

void std::multiset< _Key, _Compare, _Alloc >::clear ( )

inlinenoexcept

Erases all elements in a 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 720 of file stl_multiset.h.

◆ contains() [1/2]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

template<typename _Kt >

auto std::multiset< _Key, _Compare, _Alloc >::contains ( const _Kt & __x ) const -> decltype(_M_t._M_find_tr(__x), void(), true)

inline

Finds whether an element with the given key exists.

Parameters

__x	Key of elements to be located.

Returns: True if there is any element with the specified key.

Definition at line 756 of file stl_multiset.h.

◆ contains() [2/2]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

bool std::multiset< _Key, _Compare, _Alloc >::contains ( const key_type & __x ) const

inline

Finds whether an element with the given key exists.

Parameters

__x	Key of elements to be located.

Returns: True if there is any element with the specified key.

Definition at line 751 of file stl_multiset.h.

◆ count() [1/2]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

template<typename _Kt >

auto std::multiset< _Key, _Compare, _Alloc >::count ( const _Kt & __x ) const -> decltype(_M_t._M_count_tr(__x))

inline

Finds the number of elements with given key.

Parameters

__x	Key of elements to be located.

Returns: Number of elements with specified key.

Definition at line 738 of file stl_multiset.h.

◆ count() [2/2]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

size_type std::multiset< _Key, _Compare, _Alloc >::count ( const key_type & __x ) const

inline

Finds the number of elements with given key.

Parameters

__x	Key of elements to be located.

Returns: Number of elements with specified key.

Definition at line 732 of file stl_multiset.h.

◆ crbegin()

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

reverse_iterator std::multiset< _Key, _Compare, _Alloc >::crbegin ( ) const

inlinenoexcept

Returns a read-only (constant) reverse iterator that points to the last element in the multiset. Iteration is done in descending order according to the keys.

Definition at line 397 of file stl_multiset.h.

◆ crend()

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

reverse_iterator std::multiset< _Key, _Compare, _Alloc >::crend ( ) const

inlinenoexcept

Returns a read-only (constant) reverse iterator that points to the last element in the multiset. Iteration is done in descending order according to the keys.

Definition at line 406 of file stl_multiset.h.

◆ emplace()

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

template<typename... _Args>

iterator std::multiset< _Key, _Compare, _Alloc >::emplace ( _Args &&... __args )

inline

Builds and inserts an element into the multiset.

Parameters

__args Arguments used to generate the element instance to be inserted.

Returns: An iterator that points to the inserted element.

This function inserts an element into the multiset. Contrary to a std::set the multiset does not rely on unique keys and thus multiple copies of the same element can be inserted.

Insertion requires logarithmic time.

Definition at line 459 of file stl_multiset.h.

◆ emplace_hint()

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

template<typename... _Args>

iterator std::multiset< _Key, _Compare, _Alloc >::emplace_hint	(	const_iterator	__pos,
		_Args &&...	__args
	)

inline

Builds and inserts an element into the 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 instance to be inserted.

Returns: An iterator that points to the inserted element.

This function inserts an element into the multiset. Contrary to a std::set the multiset does not rely on unique keys and thus multiple copies of the same element can be inserted.

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

Insertion requires logarithmic time (if the hint is not taken).

Definition at line 485 of file stl_multiset.h.

◆ empty()

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

bool std::multiset< _Key, _Compare, _Alloc >::empty ( ) const

inlinenoexcept

Returns true if the set is empty.

Definition at line 412 of file stl_multiset.h.

◆ end()

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

iterator std::multiset< _Key, _Compare, _Alloc >::end ( ) const

inlinenoexcept

Returns a read-only (constant) iterator that points one past the last element in the multiset. Iteration is done in ascending order according to the keys.

Definition at line 351 of file stl_multiset.h.

Referenced by std::multiset< _Key, _Compare, _Alloc >::extract().

◆ equal_range() [1/4]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

template<typename _Kt >

auto std::multiset< _Key, _Compare, _Alloc >::equal_range ( const _Kt & __x ) -> decltype(pair<iterator, iterator>(_M_t._M_equal_range_tr(__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.

This function is equivalent to

std::make_pair(c.lower_bound(val),

c.upper_bound(val))

(but is faster than making the calls separately).

This function probably only makes sense for multisets.

Definition at line 891 of file stl_multiset.h.

◆ equal_range() [2/4]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

template<typename _Kt >

auto std::multiset< _Key, _Compare, _Alloc >::equal_range ( const _Kt & __x ) const -> decltype(pair<iterator, iterator>(_M_t._M_equal_range_tr(__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.

This function is equivalent to

std::make_pair(c.lower_bound(val),

c.upper_bound(val))

(but is faster than making the calls separately).

This function probably only makes sense for multisets.

Definition at line 897 of file stl_multiset.h.

◆ equal_range() [3/4]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

std::pair< iterator, iterator > std::multiset< _Key, _Compare, _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.

This function is equivalent to

std::make_pair(c.lower_bound(val),

c.upper_bound(val))

(but is faster than making the calls separately).

This function probably only makes sense for multisets.

Definition at line 881 of file stl_multiset.h.

◆ equal_range() [4/4]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

std::pair< const_iterator, const_iterator > std::multiset< _Key, _Compare, _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.

This function is equivalent to

std::make_pair(c.lower_bound(val),

c.upper_bound(val))

(but is faster than making the calls separately).

This function probably only makes sense for multisets.

Definition at line 885 of file stl_multiset.h.

◆ erase() [1/3]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

size_type std::multiset< _Key, _Compare, _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 elements located by the given key from a 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 671 of file stl_multiset.h.

◆ erase() [2/3]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

_GLIBCXX_ABI_TAG_CXX11 iterator std::multiset< _Key, _Compare, _Alloc >::erase	(	const_iterator	__first,
		const_iterator	__last
	)

inline

Erases a [first,last) range of elements from a 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 a 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 693 of file stl_multiset.h.

◆ erase() [3/3]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

_GLIBCXX_ABI_TAG_CXX11 iterator std::multiset< _Key, _Compare, _Alloc >::erase ( const_iterator __position )

inline

Erases an element from a 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 a 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 641 of file stl_multiset.h.

◆ extract() [1/2]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

node_type std::multiset< _Key, _Compare, _Alloc >::extract ( const key_type & __x )

inline

Extract a node.

Definition at line 580 of file stl_multiset.h.

◆ extract() [2/2]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

node_type std::multiset< _Key, _Compare, _Alloc >::extract ( const_iterator __pos )

inline

Extract a node.

Definition at line 572 of file stl_multiset.h.

References std::multiset< _Key, _Compare, _Alloc >::end().

◆ find() [1/4]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

template<typename _Kt >

auto std::multiset< _Key, _Compare, _Alloc >::find ( const _Kt & __x ) -> decltype(iterator{_M_t._M_find_tr(__x)})

inline

Tries to locate an element in a set.

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 787 of file stl_multiset.h.

◆ find() [2/4]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

template<typename _Kt >

auto std::multiset< _Key, _Compare, _Alloc >::find ( const _Kt & __x ) const -> decltype(const_iterator{_M_t._M_find_tr(__x)})

inline

Tries to locate an element in a set.

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 793 of file stl_multiset.h.

◆ find() [3/4]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

iterator std::multiset< _Key, _Compare, _Alloc >::find ( const key_type & __x )

inline

Tries to locate an element in a set.

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 777 of file stl_multiset.h.

◆ find() [4/4]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

const_iterator std::multiset< _Key, _Compare, _Alloc >::find ( const key_type & __x ) const

inline

Tries to locate an element in a set.

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 781 of file stl_multiset.h.

◆ get_allocator()

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

allocator_type std::multiset< _Key, _Compare, _Alloc >::get_allocator ( ) const

inlinenoexcept

Returns the memory allocation object.

Definition at line 333 of file stl_multiset.h.

◆ insert() [1/8]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

template<typename _InputIterator >

void std::multiset< _Key, _Compare, _Alloc >::insert	(	_InputIterator	__first,
		_InputIterator	__last
	)

inline

A template function that tries to insert 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 553 of file stl_multiset.h.

◆ insert() [2/8]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

iterator std::multiset< _Key, _Compare, _Alloc >::insert ( const value_type & __x )

inline

Inserts an element into the multiset.

Parameters

__x	Element to be inserted.

Returns: An iterator that points to the inserted element.

This function inserts an element into the multiset. Contrary to a std::set the multiset does not rely on unique keys and thus multiple copies of the same element can be inserted.

Insertion requires logarithmic time.

Definition at line 504 of file stl_multiset.h.

Referenced by std::multiset< _Key, _Compare, _Alloc >::insert().

◆ insert() [3/8]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

iterator std::multiset< _Key, _Compare, _Alloc >::insert	(	const_iterator	__hint,
		node_type &&	__nh
	)

inline

Re-insert an extracted node.

Definition at line 590 of file stl_multiset.h.

References std::move().

◆ insert() [4/8]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

iterator std::multiset< _Key, _Compare, _Alloc >::insert	(	const_iterator	__position,
		const value_type &	__x
	)

inline

Inserts an element into the multiset.

Parameters

__position	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.

This function inserts an element into the multiset. Contrary to a std::set the multiset does not rely on unique keys and thus multiple copies of the same element can be inserted.

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

Insertion requires logarithmic time (if the hint is not taken).

Definition at line 534 of file stl_multiset.h.

◆ insert() [5/8]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

iterator std::multiset< _Key, _Compare, _Alloc >::insert	(	const_iterator	__position,
		value_type &&	__x
	)

inline

Definition at line 539 of file stl_multiset.h.

◆ insert() [6/8]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

void std::multiset< _Key, _Compare, _Alloc >::insert ( initializer_list< value_type > __l )

inline

Attempts to insert a list of elements into the 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 565 of file stl_multiset.h.

References std::multiset< _Key, _Compare, _Alloc >::insert().

◆ insert() [7/8]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

iterator std::multiset< _Key, _Compare, _Alloc >::insert ( node_type && __nh )

inline

Re-insert an extracted node.

Definition at line 585 of file stl_multiset.h.

References std::move().

◆ insert() [8/8]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

iterator std::multiset< _Key, _Compare, _Alloc >::insert ( value_type && __x )

inline

Definition at line 509 of file stl_multiset.h.

◆ key_comp()

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

key_compare std::multiset< _Key, _Compare, _Alloc >::key_comp ( ) const

inline

Returns the comparison object.

Definition at line 325 of file stl_multiset.h.

◆ lower_bound() [1/4]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

template<typename _Kt >

auto std::multiset< _Key, _Compare, _Alloc >::lower_bound ( const _Kt & __x ) -> decltype(iterator(_M_t._M_lower_bound_tr(__x)))

inline

Finds the beginning of a subsequence matching given key.

Parameters

__x	Key to be located.

Returns: Iterator pointing to first element equal to or greater than key, or end().

This function returns the first element of a subsequence of elements that matches the given key. If unsuccessful it returns an iterator pointing to the first element that has a greater value than given key or end() if no such element exists.

Definition at line 822 of file stl_multiset.h.

◆ lower_bound() [2/4]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

template<typename _Kt >

auto std::multiset< _Key, _Compare, _Alloc >::lower_bound ( const _Kt & __x ) const -> decltype(iterator(_M_t._M_lower_bound_tr(__x)))

inline

Finds the beginning of a subsequence matching given key.

Parameters

__x	Key to be located.

Returns: Iterator pointing to first element equal to or greater than key, or end().

This function returns the first element of a subsequence of elements that matches the given key. If unsuccessful it returns an iterator pointing to the first element that has a greater value than given key or end() if no such element exists.

Definition at line 828 of file stl_multiset.h.

◆ lower_bound() [3/4]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

iterator std::multiset< _Key, _Compare, _Alloc >::lower_bound ( const key_type & __x )

inline

Finds the beginning of a subsequence matching given key.

Parameters

__x	Key to be located.

Returns: Iterator pointing to first element equal to or greater than key, or end().

This function returns the first element of a subsequence of elements that matches the given key. If unsuccessful it returns an iterator pointing to the first element that has a greater value than given key or end() if no such element exists.

Definition at line 812 of file stl_multiset.h.

◆ lower_bound() [4/4]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

const_iterator std::multiset< _Key, _Compare, _Alloc >::lower_bound ( const key_type & __x ) const

inline

Finds the beginning of a subsequence matching given key.

Parameters

__x	Key to be located.

Returns: Iterator pointing to first element equal to or greater than key, or end().

This function returns the first element of a subsequence of elements that matches the given key. If unsuccessful it returns an iterator pointing to the first element that has a greater value than given key or end() if no such element exists.

Definition at line 816 of file stl_multiset.h.

◆ max_size()

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

size_type std::multiset< _Key, _Compare, _Alloc >::max_size ( ) const

inlinenoexcept

Returns the maximum size of the set.

Definition at line 422 of file stl_multiset.h.

◆ merge() [1/4]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

template<typename _Compare1 >

void std::multiset< _Key, _Compare, _Alloc >::merge ( multiset< _Key, _Compare1, _Alloc > && __source )

inline

Definition at line 606 of file stl_multiset.h.

◆ merge() [2/4]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

template<typename _Compare1 >

void std::multiset< _Key, _Compare, _Alloc >::merge ( multiset< _Key, _Compare1, _Alloc > & __source )

inline

Definition at line 598 of file stl_multiset.h.

◆ merge() [3/4]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

template<typename _Compare1 >

void std::multiset< _Key, _Compare, _Alloc >::merge ( set< _Key, _Compare1, _Alloc > && __source )

inline

Definition at line 619 of file stl_multiset.h.

◆ merge() [4/4]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

template<typename _Compare1 >

void std::multiset< _Key, _Compare, _Alloc >::merge ( set< _Key, _Compare1, _Alloc > & __source )

inline

Definition at line 611 of file stl_multiset.h.

◆ operator=() [1/3]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

multiset & std::multiset< _Key, _Compare, _Alloc >::operator= ( const multiset< _Key, _Compare, _Alloc > & )

default

Multiset assignment operator.

Whether the allocator is copied depends on the allocator traits.

◆ operator=() [2/3]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

multiset & std::multiset< _Key, _Compare, _Alloc >::operator= ( initializer_list< value_type > __l )

inline

Multiset list assignment operator.

Parameters

__l	An initializer_list.

This function fills a multiset with copies of the elements in the initializer list __l.

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

Definition at line 314 of file stl_multiset.h.

◆ operator=() [3/3]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

multiset & std::multiset< _Key, _Compare, _Alloc >::operator= ( multiset< _Key, _Compare, _Alloc > && )

default

Move assignment operator.

◆ rbegin()

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

reverse_iterator std::multiset< _Key, _Compare, _Alloc >::rbegin ( ) const

inlinenoexcept

Returns a read-only (constant) reverse iterator that points to the last element in the multiset. Iteration is done in descending order according to the keys.

Definition at line 360 of file stl_multiset.h.

◆ rend()

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

reverse_iterator std::multiset< _Key, _Compare, _Alloc >::rend ( ) const

inlinenoexcept

Returns a read-only (constant) reverse iterator that points to the last element in the multiset. Iteration is done in descending order according to the keys.

Definition at line 369 of file stl_multiset.h.

◆ size()

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

size_type std::multiset< _Key, _Compare, _Alloc >::size ( ) const

inlinenoexcept

Returns the size of the set.

Definition at line 417 of file stl_multiset.h.

◆ swap()

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

void std::multiset< _Key, _Compare, _Alloc >::swap ( multiset< _Key, _Compare, _Alloc > & __x )

inlinenoexcept

Swaps data with another multiset.

Parameters

__x	A multiset of the same element and allocator types.

This exchanges the elements between two multisets in constant time. (It is only swapping a pointer, an integer, and an instance of the Compare type (which itself is often stateless and empty), so it should be quite fast.) Note that the global std::swap() function is specialized such that std::swap(s1,s2) will feed to this function.

Whether the allocators are swapped depends on the allocator traits.

Definition at line 439 of file stl_multiset.h.

◆ upper_bound() [1/4]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

template<typename _Kt >

auto std::multiset< _Key, _Compare, _Alloc >::upper_bound ( const _Kt & __x ) -> decltype(iterator(_M_t._M_upper_bound_tr(__x)))

inline

Finds the end of a subsequence matching given key.

Parameters

__x	Key to be located.

Returns: Iterator pointing to the first element greater than key, or end().

Definition at line 852 of file stl_multiset.h.

◆ upper_bound() [2/4]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

template<typename _Kt >

auto std::multiset< _Key, _Compare, _Alloc >::upper_bound ( const _Kt & __x ) const -> decltype(iterator(_M_t._M_upper_bound_tr(__x)))

inline

Finds the end of a subsequence matching given key.

Parameters

__x	Key to be located.

Returns: Iterator pointing to the first element greater than key, or end().

Definition at line 858 of file stl_multiset.h.

◆ upper_bound() [3/4]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

iterator std::multiset< _Key, _Compare, _Alloc >::upper_bound ( const key_type & __x )

inline

Finds the end of a subsequence matching given key.

Parameters

__x	Key to be located.

Returns: Iterator pointing to the first element greater than key, or end().

Definition at line 842 of file stl_multiset.h.

◆ upper_bound() [4/4]

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

const_iterator std::multiset< _Key, _Compare, _Alloc >::upper_bound ( const key_type & __x ) const

inline

Finds the end of a subsequence matching given key.

Parameters

__x	Key to be located.

Returns: Iterator pointing to the first element greater than key, or end().

Definition at line 846 of file stl_multiset.h.

◆ value_comp()

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

value_compare std::multiset< _Key, _Compare, _Alloc >::value_comp ( ) const

inline

Returns the comparison object.

Definition at line 329 of file stl_multiset.h.

Friends And Related Symbol Documentation

◆ std::_Rb_tree_merge_helper

template<typename _Key , typename _Compare = std::less<_Key>, typename _Alloc = std::allocator<_Key>>

template<typename , typename >

friend struct std::_Rb_tree_merge_helper

friend

Definition at line 594 of file stl_multiset.h.

The documentation for this class was generated from the following file:

stl_multiset.h

Public Types

Public Member Functions

Friends

Detailed Description

Member Typedef Documentation

◆ allocator_type

◆ const_iterator

◆ const_pointer

◆ const_reference

◆ const_reverse_iterator

◆ difference_type

◆ iterator

◆ key_compare

◆ key_type

◆ node_type

◆ pointer

◆ reference

◆ reverse_iterator

◆ size_type

◆ value_compare

◆ value_type

Constructor & Destructor Documentation

◆ multiset() [1/12]

◆ multiset() [2/12]

◆ multiset() [3/12]

◆ multiset() [4/12]

◆ multiset() [5/12]

◆ multiset() [6/12]

◆ multiset() [7/12]

◆ multiset() [8/12]

◆ multiset() [9/12]

◆ multiset() [10/12]

◆ multiset() [11/12]

◆ multiset() [12/12]

◆ ~multiset()

Member Function Documentation

◆ begin()

◆ cbegin()

◆ cend()

◆ clear()

◆ contains() [1/2]

◆ contains() [2/2]

◆ count() [1/2]

◆ count() [2/2]

◆ crbegin()

◆ crend()

◆ emplace()

◆ emplace_hint()

◆ empty()

◆ end()

◆ equal_range() [1/4]

◆ equal_range() [2/4]

◆ equal_range() [3/4]

◆ equal_range() [4/4]

◆ erase() [1/3]

◆ erase() [2/3]

◆ erase() [3/3]

◆ extract() [1/2]

◆ extract() [2/2]

◆ find() [1/4]

◆ find() [2/4]

◆ find() [3/4]

◆ find() [4/4]

◆ get_allocator()

◆ insert() [1/8]

◆ insert() [2/8]

◆ insert() [3/8]

◆ insert() [4/8]

◆ insert() [5/8]

◆ insert() [6/8]

◆ insert() [7/8]

◆ insert() [8/8]

◆ key_comp()

◆ lower_bound() [1/4]

◆ lower_bound() [2/4]

◆ lower_bound() [3/4]

◆ lower_bound() [4/4]

◆ max_size()

◆ merge() [1/4]

◆ merge() [2/4]