std::stack<T,Container>::emplace (3) - Linux Man Pages

std::stack<T,Container>::emplace: std::stack<T,Container>::emplace

NAME

std::stack<T,Container>::emplace - std::stack<T,Container>::emplace

Synopsis


template< class... Args > (since C++11)
void emplace( Args&&... args ); (until C++17)
template< class... Args > (since C++17)
decltype(auto) emplace( Args&&... args );


Pushes a new element on top of the stack. The element is constructed in-place, i.e. no copy or move operations are performed. The constructor of the element is called with exactly the same arguments as supplied to the function.
Effectively calls c.emplace_back(std::forward<Args>(args)...);

Parameters


args - arguments to forward to the constructor of the element

Return value


(none) (until C++17)
The value or reference, if any, returned by the above call to Container::emplace_back. (since C++17)

Complexity


Identical to the complexity of Container::emplace_back.


 Defect reports


The following behavior-changing defect reports were applied retroactively to previously published C++ standards.


DR Applied to Behavior as published Correct behavior
LWG_2783 C++17 emplace returned reference, breaking compatibility with pre-C++17 containers returns decltype(auto)

See also


     inserts element at the top
push (public member function)
     removes the top element
pop (public member function)