const_iterator is a common typedef in containers for an iterator-type that can only read the element it is located at.


#include <vector>



int main()

{

  const std::vector<int> v(10,0);

  const std::vector<int>::const_iterator i = v.begin();

}

Closer inspection (of vector.h for example) yields the following typedefs:


typedef _TYPENAME __value_alloc_type::const_pointer const_iterator;

typedef const T* const_pointer;

This concludes that the following two data types are equivalent:


std::vector<int>::const_iterator DataTypeOne;

const int * DataTypeOne;

(C++) const_iterator