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| title |
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| multiset |
{{< callout type="info">}}
Header: multiset.h
Similar to: std::multiset
{{< /callout >}}
A fixed capacity multiset.
Uses etl or std::less as the default key comparison method.
etl::multiset<typename T, const size_t SIZE, TKeyCompare = etl::less>
Inherits from etl::iset<T, TKeyCompare>.
etl::iset may be used as a size independent pointer or reference type for any etl::multiset instance.
Template deduction guides
C++17 and above
template <typename... TPairs>
etl::multiset(TPairs...)
Example
etl::multiset data{ 0, 1, 2, 3, 4, 5, 6, 7 };
Defines data as an multiset of int, of length 8, containing the supplied data.
Make template
C++11 and above
template <typename TKey,
typename TKeyCompare = etl::less<TKey>,
typename... TPairs>
constexpr auto make_set(TValues&&... values)
Example
auto data = etl::make_set<int>(0, 1, 2, 3, 4, 5, 6, 7);
Member types
value_type T
size_type size_t
difference_type ptrdiff_t
reference value_type&
const_reference const value_type&
pointer value_type*
const_pointer const value_type*
iterator Random access iterator
const_iterator Constant random access iterator
reverse_iterator ETL_OR_STD::reverse_iterator<iterator>
const_reverse_iterator ETL_OR_STD::reverse_iterator<const_iterator>
Constructors
etl::multiset<T, SIZE, TKeyCompare>()
Description
template <typename TIterator>
etl::multiset<T, SIZE, TKeyCompare>(TIterator begin, TIterator end)
Description
If the map is full then emits an etl::reference_flat_set_full.
If asserts or exceptions are not enabled then undefined behaviour occurs.
Element access
iterator find(const value_type& v)
const_iterator find(const value_type& v) const
Description
Searches the container for an element with a value of v and returns an iterator to it if found, otherwise it returns an iterator to etl::multiset::end().
size_type count(const value_type& v) const
Description
Count elements with a specific key.
Searches the container for elements with a value of v and returns the number of matches
iterator lower_bound(const value_type& v)
const_iterator lower_bound(const value_type& v) const
Description
Searches for an element with the key not less than v.
Returns an iterator to the element, or end() if not found.
iterator upper_bound(const value_type& v)
const_iterator upper_bound (const value_type& v) const
Description
Searches for an element with the key greater than v.
Returns an iterator to the element, or end() if not found.
pair<const_iterator, const_iterator> equal_range(const value_type& v) const
pair<iterator, iterator> equal_range(const value_type& v)
Description
Returns the range of elements with a key equal to v.
The return type is either std::pair (default) or etl::pair (ETL_NO_STL)
For comparators that define is_transparent.
template <typename K>
iterator find(const K& key)
Description
Since: 20.21.0
C++11 or above.
template <typename K>
const_iterator find(const K& key) const
Description
Since: 20.21.0
C++11 or above.
template <typename K>
iterator lower_bound(const K& key)
Description
Searches for an element with the key not less than key.
Returns an iterator to the element, or end() if not found.
Since: 20.21.0
C++11 or above.
template <typename K>
const_iterator lower_bound(const K& key) const
Description
Searches for an element with the key not less than key.
Returns a const iterator to the element, or end() if not found.
Since: 20.21.0
C++11 or above.
template <typename K>
iterator upper_bound(const K& key)
Description
Searches for an element with the key greater than key.
Returns an iterator to the element, or end() if not found.
Since: 20.21.0
C++11 or above.
template <typename K>
const_iterator upper_bound(const K& key) const
Description
Searches for an element with the key greater than key.
Returns a const iterator to the element, or end() if not found.
Since: 20.21.0
C++11 or above.
template <typename K>
pair<iterator, iterator> equal_range(const K& key)
Description
Returns the range of elements with a key equal to key.
The return type is either std::pair (default) or etl::pair (ETL_NO_STL)
Since: 20.21.0
C++11 or above.
template <typename K>
pair<const_iterator, const_iterator> equal_range(const K& key) const
Description
Returns the range of elements with a key equal to key.
The return type is either std::pair (default) or etl::pair (ETL_NO_STL)
Since: 20.21.0
C++11 or above.
bool contains(key_value_parameter_t key) const
Description
Check if the container contains the key.
Since: 20.21.0
For comparators that define is_transparent.
template <typename K>
Description
Since: 20.21.0
C++11 or above.
bool contains(const K& k) const
Check if the container contains the key.
Since: 20.21.0
C++11 or above.
Iterators
iterator begin()
const_iterator begin() const
const_iterator cbegin() const
Description
Returns an iterator to the beginning of the map.
iterator end()
const_iterator end() const
const_iterator cend() const
Description
Returns an iterator to the end of the map.
iterator rbegin()
const_iterator rbegin() const
const_iterator crbegin() const
Description
Returns a reverse iterator to the beginning of the map.
iterator rbegin()
const_iterator rbegin() const
const_iterator crbegin() const
Description
Returns a reverse iterator to the beginning of the map.
Capacity
bool empty() const
Description
Returns true if the size of the map is zero, otherwise false.
bool full() const
Description
Returns true if the size of the map is SIZE, otherwise false.
size_t size() const
Description
Returns the size of the map.
size_t max_size() const
Description
Returns the maximum possible size of the map.
size_t available() const
Description
Returns the remaining available capacity in the map.
Modifiers
<=20.19.0
template <typename TIterator>
void insert(TIterator begin, TIterator end)
Description
=20.20.0
template <typename TIterator>
iterator insert(TIterator begin, TIterator end)
Description
iterator insert(parameter_t value)
Description
Inserts values in to the map.
If the multiset is full then emits an etl::multiset_full.
If asserts or exceptions are not enabled then undefined behaviour occurs.
template <typename TIterator>
iterator erase(TIterator begin, TIterator end)
Description
iterator erase(TIterator element)
Description
Erases values in the multiset.
Iterators are not checked for validity.
size_t erase(const key_type& key)
Description
20.21.0
template <typename K>
size_t erase(K&& key)
Description
void clear()
Description
Clears the map to a size of zero.
Non-member functions
operator ==
Description
true if the contents of the sets are equal, otherwise false.
operator !=
Description
true if the contents of the sets are not equal, otherwise false.