std::vector works with classes that are not default constructible?

Question

I\'ve read in several places that std::vector requires it\'s template argument to be default constructible. Today I just tried it with one of my classes that has a delete<

Answer 1

There are two vector members that require a default constructible T in C++11:

explicit vector(size_type n);
void resize(size_type sz);

Nothing else does. So if you use these signatures, you need to have a default constructible type, else you do not.