[Insight-users] STL vector iterator

[salah]

Hello,

I am using two iterators to point to two different positions on an STL
vector. I want to decide which iterator is advancing more that the other.
is it meaningful to just compare the two iterator? i.e. something like this

   typedef std::vector< ...... > VectorType;
   VectorType::iterator  iter1, iter2;
   ....
   ....
   if (iter1  < iter2) {
      ....
      ....
   } 

or something else is needed. This comparison does not seem 
to work by me.

Thanks,
Zein