template <class... Args>
iterator emplace_hint( const_iterator hint, Args&&... args );
Inserts a new element to the container, using
hint as a suggestion where the element should go. The element is constructed in-place, i.e. no copy or move operations are performed. 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)....
|hint||-||iterator, used as a suggestion as to where to insert the new element|
|args||-||arguments to forward to the constructor of the element|
[تعديل] Return value
Returns an iterator to the newly inserted element.
Amortized constant on average, worst case linear in the size of the container.