public member function
<forward_list>
Reverse the order of elements
Reverses the order of the elements in the forward_list container.
Example
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// reversing forward_list
#include <iostream>
#include <forward_list>
int main ()
{
std::forward_list<int> mylist = {10, 20, 30, 40};
mylist.reverse();
std::cout << "mylist contains:";
for (int& x: mylist) std::cout << ' ' << x;
std::cout << '\n';
return 0;
}
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Output:
mylist contains: 40 30 20 10
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Complexity
Linear in container size.
Iterator validity
No changes.
Data races
The container is modified.
No contained elements are accessed: concurrently accessing or modifying them is safe, although iterating through the container is not.
Exception safety
No-throw guarantee: this member function never throws exceptions.