So, I wrote a bunch of code that accesses elements in an stl vector by index, but now I need to copy just a chunk of the vector. It looks like
vector.insert(pos, first, last) is the function I want... except I only have first and last as ints. Is there any nice way I can get an iterator to these values?
vector<Type>::iterator nth = v.begin() + index;
way mentioned by @dirkgently
( v.begin() + index ) nice and fast for vectors
( v.begin(), index ) most generic way and for random access iterators works constant time too.
differences in usage:
std::vector<>::iterator it = ( v.begin() + index );
std::vector<>::iterator it = v.begin(); std::advance( it, index );
added after @litb notes.