Public Types
typedef _Alloc	allocator_type

typedef _Rep_type::const_iterator	const_iterator

typedef _Key_alloc_type::const_pointer	const_pointer

typedef _Key_alloc_type::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

typedef _Key_alloc_type::pointer	pointer

typedef _Key_alloc_type::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 ()

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

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())

	multiset (const multiset &__x)

	multiset (multiset &&__x) noexcept(is_nothrow_copy_constructible< _Compare >::value)

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

iterator	begin () const _GLIBCXX_NOEXCEPT

iterator	cbegin () const noexcept

iterator	cend () const noexcept

void	clear () _GLIBCXX_NOEXCEPT

size_type	count (const key_type &__x) const

reverse_iterator	crbegin () const noexcept

reverse_iterator	crend () const noexcept

bool	empty () const _GLIBCXX_NOEXCEPT

iterator	end () const _GLIBCXX_NOEXCEPT

iterator	erase (const_iterator __position)

size_type	erase (const key_type &__x)

iterator	erase (const_iterator __first, const_iterator __last)

allocator_type	get_allocator () const _GLIBCXX_NOEXCEPT

iterator	insert (const value_type &__x)

iterator	insert (value_type &&__x)

iterator	insert (const_iterator __position, const value_type &__x)

iterator	insert (const_iterator __position, value_type &&__x)

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

void	insert (initializer_list< value_type > __l)

key_compare	key_comp () const

size_type	max_size () const _GLIBCXX_NOEXCEPT

multiset &	operator= (const multiset &__x)

multiset &	operator= (multiset &&__x)

multiset &	operator= (initializer_list< value_type > __l)

reverse_iterator	rbegin () const _GLIBCXX_NOEXCEPT

reverse_iterator	rend () const _GLIBCXX_NOEXCEPT

size_type	size () const _GLIBCXX_NOEXCEPT

void	swap (multiset &__x)

value_compare	value_comp () const


iterator	find (const key_type &__x)

const_iterator	find (const key_type &__x) const


iterator	lower_bound (const key_type &__x)

const_iterator	lower_bound (const key_type &__x) const


iterator	upper_bound (const key_type &__x)

const_iterator	upper_bound (const key_type &__x) const


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

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

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 > &)

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.

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 88 of file stl_multiset.h.

Constructor & Destructor Documentation

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

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

inline

Default constructor creates no elements.

Definition at line 133 of file stl_multiset.h.

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 142 of file stl_multiset.h.

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 156 of file stl_multiset.h.

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 172 of file stl_multiset.h.

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

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

inline

Multiset copy constructor.

Parameters

__x	A multiset of identical element and allocator types.

The newly-created multiset uses a copy of the allocation object used by __x.

Definition at line 185 of file stl_multiset.h.

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

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

inlinenoexcept

Multiset move constructor.

Parameters

__x	A multiset of identical element and allocator types.

The newly-created multiset contains the exact contents of __x. The contents of __x are a valid, but unspecified multiset.

Definition at line 196 of file stl_multiset.h.

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 210 of file stl_multiset.h.

Member Function Documentation

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

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

inline

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 291 of file stl_multiset.h.

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 328 of file stl_multiset.h.

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 337 of file stl_multiset.h.

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

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

inline

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 562 of file stl_multiset.h.

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

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 573 of file stl_multiset.h.

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 346 of file stl_multiset.h.

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 355 of file stl_multiset.h.

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

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

inline

Returns true if the set is empty.

Definition at line 361 of file stl_multiset.h.

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

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

inline

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 300 of file stl_multiset.h.

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 653 of file stl_multiset.h.

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 657 of file stl_multiset.h.

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

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 484 of file stl_multiset.h.

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 514 of file stl_multiset.h.

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

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 535 of file stl_multiset.h.

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 591 of file stl_multiset.h.

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 595 of file stl_multiset.h.

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

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

inline

Returns the memory allocation object.

Definition at line 282 of file stl_multiset.h.

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 402 of file stl_multiset.h.

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

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

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

Definition at line 432 of file stl_multiset.h.

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 451 of file stl_multiset.h.

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 463 of file stl_multiset.h.

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

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 274 of file stl_multiset.h.

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 612 of file stl_multiset.h.

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 616 of file stl_multiset.h.

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

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

inline

Returns the maximum size of the set.

Definition at line 371 of file stl_multiset.h.

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 > & __x )

inline

Multiset assignment operator.

Parameters

__x	A multiset of identical element and allocator types.

All the elements of __x are copied, but unlike the copy constructor, the allocator object is not copied.

Definition at line 225 of file stl_multiset.h.

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

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

inline

Multiset move assignment operator.

Parameters

__x	A multiset of identical element and allocator types.

The contents of __x are moved into this multiset (without copying). __x is a valid, but unspecified multiset.

Definition at line 241 of file stl_multiset.h.

References std::multiset< _Key, _Compare, _Alloc >::clear(), and std::multiset< _Key, _Compare, _Alloc >::swap().

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. Old data may be lost.

Definition at line 262 of file stl_multiset.h.

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

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

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

inline

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 309 of file stl_multiset.h.

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

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

inline

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 318 of file stl_multiset.h.

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

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

inline

Returns the size of the set.

Definition at line 366 of file stl_multiset.h.

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 )

inline

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.

Definition at line 386 of file stl_multiset.h.

Referenced by std::multiset< _Key, _Compare, _Alloc >::operator=(), and std::swap().

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 628 of file stl_multiset.h.

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 632 of file stl_multiset.h.

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 278 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

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

Constructor & Destructor Documentation

Member Function Documentation

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