Vector clear vs. resize

Question

I read on the Internet that if you are clearing a std::vector repetitively (in a tight loop), it might be better to use resize(0) instead of

Answer 1

Looking at Dinkumware STL source, both effectively call erase(begin(), end());

clear() is slightly more efficient, unsurprisingly., as it has just the one case to deal with. but I wouldn't expect it's measurable.