std::forward_list<T,Allocator>::emplace_front

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C++
 
Containers library
 
std::forward_list
Member functions
(C++23)
Element access
Iterators
Capacity
Modifiers
(C++23)
forward_list::emplace_front
(C++23)
Operations
Non-member functions
(C++20)(C++20)
(until C++20)(until C++20)(until C++20)(until C++20)(until C++20)(C++20)
Deduction guides(C++17)
 
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.

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.

Return value

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

Complexity

Constant.

Exceptions

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

See also

(C++11)
 inserts an element to the beginning
(public member function)
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