std::vector::resize() vs. std::vector::reserve()

Question

There is a thread in the comments section in this post about using std::vector::reserve() vs. std::vector::resize().

Here is the original c

Answer 1

There probably should be a discussion about when both methods are called with a number that's LESS than the current size of the vector.

Calling reserve() with a number smaller than the capacity will not affect the size or the capacity.

Calling resize() with a number smaller than current size the container will be reduced to that size effectively destroying the excess elements.

To sum up resize() will free up memory whereas reserve() will not.