C++ multidimensional array operator

Question

it is possible to overload somehow operator for multidimensional array?

Something like:

class A {
  ...
  int& operator[][] (const int x, const i         


        

Answer 1

As mentionned before, there is no such thing as operator[][]. However, here is an an implementation using nested classes similar to what "jalf" proposed. For sake of simplicity, I hardcoded a 3x3 raw array.

    class Array2D final{
    public:
        class PartialArr final{
    private:
        friend Array2D;
        PartialArr(Array2D* ptr, int index) :original(ptr), firstIndex(index) {}
        int firstIndex;
        Array2D* original;
    public:
        int& operator[](int index) { return this->original->data[firstIndex][index];  }
    };

        PartialArr operator[](int index) { return PartialArr(this, index); }
    private:
        int data[3][3];
    };

This solution prevents the user of Array2D to manipulate the data directly when indexing only the first dimension of the array.

const versions of both operator[] could also be added to make the class complete.