Question

As suggested here I fixed my 2D array of numbers to make it work with Vector class.

Header file:

#include <vector>

typedef std::vector<int> Array;
typedef std::vector<Array> TwoDArray;

And here is how it’s used:

TwoDArray Arr2D; 

// Add rows
for (int i = 0; i < numRows; ++i) {
    Arr2D.push_back(Array());
}

// Fill in test data
for (int i = 0; i < numRows; i++) {    
    for (int j = 0; j < numCols; j++) {
        Arr2D[i].push_back(ofRandom(0, 10));           
    }
}

// Make sure the data is there
for (int i = 0; i < numRows; i++) {    
    for (int j = 0; j < numCols; j++) {
        std::cout << Arr2D[i][j] << ' ';
    }
std::cout << '\n';
}

My question is, how can I do the same for custom objects instead of int numbers? I’ve tried a changing int by MyObject and using push_back(new MyObject()); but it doesn’t work properly when I try to access it’s functions.

Thank you in advance.

Answer 1

new MyObject() will return a pointer to the newly created an instance of class MyObject. If you have created a vector<MyObject> then you need to do something like push_back(MyObject()).