c++ Initialising 2 different iterators in a for loop [duplicate]

Answer 1

Check out the zip iterator. It does exactly what you want: parallel iterate over two or more sequences simultaneously. Using that, I'd write it as:

using namespace boost;

for (auto i=make_zip_iterator(make_tuple(dubVec.begin(), intVec.begin())),
          ie=make_zip_iterator(make_tuple(dubVec.end(), intVec.end()));
          i!=ie; ++i)
{
  // ...
}

Admittedly, this get's a little more complicated if you don't have support for auto or other type inference in your specific case, but it can still be quite nice with a typedef.