Fastest way to reset every value of std::vector to 0

Question

What\'s the fastest way to reset every value of a std::vector to 0 and keeping the vectors initial size ?

A for loop with the [] operator ?

Answer 1

If it's just a vector of integers, I'd first try:

memset(&my_vector[0], 0, my_vector.size() * sizeof my_vector[0]);

It's not very C++, so I'm sure someone will provide the proper way of doing this. :)