NAME¶

std::unordered_multimap::emplace_hint - std::unordered_multimap::emplace_hint

Synopsis¶

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

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

The constructor of the element type (value_type, that is, std::pair<const Key, T>)
is 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.

Example¶

This section is incomplete
Reason: no example

See also¶

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

Category:¶

* Todo no example