fastest way to convert a std::vector to another std::vector

Question

What is the fastest way (if there is any other) to convert a std::vector from one datatype to another (with the idea to save space)? For example:

std::vector         


        

Answer 1

You should be able to use assign like this:

vector v;
//...
vector u;
//...
u.assign(v.begin(), v.end());