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std::forward_list::emplace_front

From cppreference.com
template< class... Args >
void emplace_front( Args&&... args );
(since C++11)
(until C++17)
template< class... Args >
reference emplace_front( Args&&... args );
(since C++17)

Inserts a new element to the beginning of the container. The element is constructed through std::allocator_traits::construct, which typically uses placement-new to construct the element in-place at the location provided by the container. The arguments args... are forwarded to the constructor as std::forward<Args>(args)....

No iterators or references are invalidated.

Contents

[edit] Parameters

args - arguments to forward to the constructor of the element
Type requirements
-
T (the container's element type) must meet the requirements of EmplaceConstructible.

[edit] Return value

(none) (until C++17)
A reference to the inserted element. (since C++17)

[edit] Complexity

Constant.

[edit] Exceptions

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

[edit] See also

inserts an element to the beginning
(public member function) [edit]