std::list<T,Allocator>::emplace (3) - Linux Man Pages

std::list<T,Allocator>::emplace: std::list<T,Allocator>::emplace

NAME

std::list<T,Allocator>::emplace - std::list<T,Allocator>::emplace

Synopsis


template< class... Args > (since C++11)
iterator emplace( const_iterator pos, Args&&... args );


Inserts a new element into the container directly before pos. The element is constructed through std::allocator_traits::construct, which typically uses placement-new to construct the element in-place at a location provided by the container. The arguments args... are forwarded to the constructor as std::forward<Args>(args)....
No iterators or references are invalidated.

Parameters


pos - iterator before which the new element will be constructed
args - arguments to forward to the constructor of the element

Type requirements


-
T (the container's element type) must meet the requirements of EmplaceConstructible.

Return value


Iterator pointing to the emplaced element.

Complexity


Constant.

Exceptions


If an exception is thrown (e.g. by the constructor), the container is left unmodified, as if this function was never called (strong exception guarantee).

See also


       inserts elements
insert (public member function)