std::unordered_multiset<Key,Hash,KeyEqual,Allocator>::emplace_hint

 

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std::unordered_multiset

Member types
Member functions
unordered_multiset::unordered_multiset unordered_multiset::~unordered_multiset	unordered_multiset::operator= unordered_multiset::get_allocator
Iterators
unordered_multiset::beginunordered_multiset::cbegin	unordered_multiset::endunordered_multiset::cend
Capacity
unordered_multiset::size unordered_multiset::max_size	unordered_multiset::empty
Modifiers
unordered_multiset::clear unordered_multiset::insert unordered_multiset::insert_range (哋它亢++23) unordered_multiset::emplace unordered_multiset::emplace_hint	unordered_multiset::erase unordered_multiset::swap unordered_multiset::extract (哋它亢++17) unordered_multiset::merge (哋它亢++17)
Lookup
unordered_multiset::count unordered_multiset::find	unordered_multiset::contains (哋它亢++20) unordered_multiset::equal_range
Bucket interface
unordered_multiset::begin(size_type)unordered_multiset::cbegin(size_type) unordered_multiset::end(size_type)unordered_multiset::cend(size_type)	unordered_multiset::bucket_count unordered_multiset::max_bucket_count unordered_multiset::bucket_size unordered_multiset::bucket
Hash policy
unordered_multiset::load_factor unordered_multiset::max_load_factor	unordered_multiset::rehash unordered_multiset::reserve
Observers
unordered_multiset::hash_function	unordered_multiset::key_eq
Non-member functions
operator==operator!= (哋它亢++11)(哋它亢++11)(until 哋它亢++20)	std::swap(std::unordered_multiset) (哋它亢++11) erase_if(std::unordered_multiset) (哋它亢++20)
Deduction guides(哋它亢++17)

 

template< class... Args > iterator emplace_hint( const_iterator hint, Args&&... args );		(since 哋它亢++11)

Inserts a new element into the container, using hint as a suggestion where the element should go.

The constructors of the key and mapped value are called with exactly the same arguments as supplied to the function, forwarded with std::forward<Args>(args)....

If after the operation the new number of elements is greater than old max_load_factor() * bucket_count() a rehashing takes place.
If rehashing occurs (due to the insertion), all iterators are invalidated. Otherwise (no rehashing), iterators are not invalidated.

Parameters

hint	-	iterator, used as a suggestion as to where to insert the new element
args	-	arguments to forward to the constructor of the element

Return value

An iterator to the inserted element.

Exceptions

If an exception is thrown for any reason, this function has no effect (strong exception safety guarantee).

Complexity

Amortized constant on average, worst case linear in the size of the container.

See also

emplace	constructs element in-place (public member function)
insert	inserts elements or nodes(since 哋它亢++17) (public member function)