Question answered. Cool!
"George" <George@discussions.microsoft.com> wrote in message
news:83684567-C1D3-4D9C-BB7F-2AB905DBC802@microsoft.com...
For random access iterator, operator[] is supported. Mentioned in Bjarne's
book, Chapter 19 (Iterators and Allocators).
I have not used operator[] on random access iterator before and I have not
found a good and simple sample either. :-)
That is because it is not very intuitive to use as compared to using the
operator[] overloaded for the container itself. Also, as far as VC++ 2005 is
concerned, it causes two dereferences. You can use the iterator's operator[]
as below:
#include<vector>
using std::vector;
int main()
{
vector<int> vec(10);
vector<int>::iterator it = vec.begin();
int fifth_element = it[4]; //equivalent to advance it by 4 and
dererefence the resulting iterator
int fifth_element = vec[4]; //preferred and more intuitive
}