Accessing the [] operator from a pointer

Question

If I define a pointer to an object that defines the [] operator, is there a direct way to access this operator from a pointer?

For example, in the follo

Answer 1

It is worth noting that in C++11 std::vector has a member function 'data' that returns a pointer to the underlying array (both const and non-const versions), allowing you to write the following:

VecPtr->data()[0];

This might be an alternative to

VecPtr->at(0);

which incurs a small runtime overhead, but more importantly it's use implies you aren't checking the index for validity before calling it, which is not true in your particular example.

See std::vector::data for more details.