std::vector and std::string reallocation strategy

Question

What is the reallocation strategy used for std::string and std::vector in GCC\'s implementations?

I\'m interested in the specific strategy employed: When I append it

Answer 1

All bets are off on how exactly reserve works. You use it something like this:

std::vector myV;
myV.reserve();

so you know reserve won't have to be called (nor any re-allocation performed) until after that space is exceeded.