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std::multiset emplace() method

// Non const version only
template< class... Args >
iterator emplace( Args&&... args );

Inserts a new element into the container constructed in-place with the given args.

Careful use of emplace allows the new element to be constructed while avoiding unnecessary copy or move operations. The constructor of the new element (i.e. std::pair<const Key, T>) is called with exactly the same arguments as supplied to emplace, forwarded via std::forward<Args>(args)....

No iterators or references are invalidated.

Parameters​

  • args - arguments to forward to the constructor of the element

Return value​

Returns an iterator to the inserted element.

Complexity​

Logarithmic in the size of the container - O(log size()).

Exceptions​

If an exception is thrown by any operation, this function has no effect (strong exception guarantee).

Example​

important

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std::multiset emplace() method

// Non const version only
template< class... Args >
iterator emplace( Args&&... args );

Inserts a new element into the container constructed in-place with the given args.

Careful use of emplace allows the new element to be constructed while avoiding unnecessary copy or move operations. The constructor of the new element (i.e. std::pair<const Key, T>) is called with exactly the same arguments as supplied to emplace, forwarded via std::forward<Args>(args)....

No iterators or references are invalidated.

Parameters​

  • args - arguments to forward to the constructor of the element

Return value​

Returns an iterator to the inserted element.

Complexity​

Logarithmic in the size of the container - O(log size()).

Exceptions​

If an exception is thrown by any operation, this function has no effect (strong exception guarantee).

Example​

important

This section requires improvement. You can help by editing this doc page.

This article originates from this CppReference page. It was likely altered for improvements or editors' preference. Click "Edit this page" to see all changes made to this document.
Hover to see the original license.