2d_array.cpp

#include <iostream>
#include <string>


template <class T>
class Array2D {
public:
    Array2D(int dim1, int dim2)  :d_container(new Array1D(dim1)) {
        for (int i=0; i< dim1; ++i) {
            Array1D array1(dim2);
            *(d_container+i) = array1;
        }
    };
    class Array1D {
    public:
        Array1D(int dim) :d_data(new T[dim]){
        };
        Array1D(const Array1D& other) : d_data(other.d_data){};
        Array1D& operator=(const Array1D& rhs){
            if (d_data != rhs.d_data) {
                d_data = rhs.d_data;
            }
            return *this;
        };
        T& operator[] (int index) {
            return *(d_data+index);
        };
        const T& operator[] (int index) const {
            return *(d_data+index);
        };
        T* d_data;
    };
    Array1D operator[] (int index) {
        return *(d_container+index);
    };
    const Array1D operator[] (int index) const {
        return *(d_container+index);
    };
    Array1D* d_container;
};

int main() {
    Array2D<int> a(10,30);
    a[2][3] = 1;
    std::cout << a[2][3] << std::endl;
    Array2D<std::string> b(10,30);
    b[2][3] = "hello";
    std::cout << b[2][3] << std::endl;

}