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

Removes the first element of the container. If there are no elements in the container, the behavior is undefined.

References and iterators to the erased element are invalidated.

Parameters

(none)

Return value

(none)

Complexity

Constant.

Exceptions

Does not throw.

Example

#include <forward_list>
#include <iostream>
 
int main()
{
    std::forward_list<char> chars{'A', 'B', 'C', 'D'};
 
    for (; !chars.empty(); chars.pop_front())
        std::cout << "chars.front(): '" << chars.front() << "'\n";
}

chars.front(): 'A'
chars.front(): 'B'
chars.front(): 'C'
chars.front(): 'D'

See also