std::unordered_set<Key,Hash,KeyEqual,Allocator>::emplace

Since C++11

Inserts a new element into the container constructed in-place with the given args, if there is no element with the key in the container.

# Declarations

template< class... Args >
std::pair<iterator, bool> emplace( Args&&... args );

(since C++11)

# Parameters

args: arguments to forward to the constructor of the element

# Return value

A pair consisting of an iterator to the inserted element (or to the element that prevented the insertion) and a bool value set to true if and only if the insertion took place.

# Example

This section is incompleteReason: no example

# See also

emplace_hint
insert