How do I return hundreds of values from a C++ function?

Question

In C++, whenever a function creates many (hundreds or thousands of) values, I used to have the caller pass an array that my function then fills with the output values:

Answer 1

I'd say your new solution is more general, and better style. I'm not sure I'd worry too much about style in c++, more about usability and efficiency.

If you're returning a lot of items, and know the size, using a vector would allow you to reserve the memory in one allocation, which may or may not be worth it.