C++ Vector of vectors

Question

I have a class header file called Grid.h that contains the following 2 private data object:

vector column;
vector> row;
         


        

Answer 1

This is probably not the index problem, but you also need a space between the nested angle brackets in your vector of vectors type declaration. C++ compilers have a hard time telling the difference between nested template types and the right bit shift operator.

Example:

vector >  vec2d;        // Good.

vector>   anotherVec2d; // Bad!

vector< vector > yetAgain;     // Best IMHO. 
                                    // Keeps the white space balanced.