algorithm to add values of two ranges and place them into a third one

Question

I was just wondering if there was anything (either in c++11 or boost) that could help me do something like this:

std::vector v1 = {1, 2, 3};
std::         


        

Answer 1

You can use the 5 parameter overload of std::transform for this. This takes a binary functor to operate on pairs of elements of two ranges:

std::transform(v1.begin(), 
               v1.end(), 
               v2.begin(), 
               back_inserter(res), 
               std::plus());