NAME¶

std::flat_set::emplace - std::flat_set::emplace

Synopsis¶

template< class... Args > (since C++23)
std::pair<iterator, bool> emplace( Args&&... args );

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.

First, initializes an object t of type value_type with std::forward<Args>(args)...,
then inserts t as if by

auto it = ranges::upper_bound(c, t, compare);
c.insert(it, std::move(t));

This overload participates in overload resolution only if
std::is_constructible_v<value_type, Args...> is true.

Careful use of emplace allows the new element to be constructed while avoiding
unnecessary copy or move operations.

Information on iterator invalidation is copied from here

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.

Exceptions¶

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

Complexity¶

Logarithmic in the size of the container.

Example¶

This section is incomplete
Reason: no example

See also¶

emplace_hint constructs elements in-place using a hint
(public member function)
insert inserts elements
(public member function)

Category:¶

* Todo no example