Populate a 3D vector with class objects

Question

I have a class object called Cube:

class Cube{ public: Cube(); }; Cube::Cube(){}

I create a 3D grid of the Cube objects as such:

 vector<vector<vector<Cube>>> grid;

Now I want to populate it with a certain amount of Cube objects. Essentially I want to do the same thing as if I was creating a 3D array:

Cube grid[10][10][10]

Is this possible in C++?

You can do it like this: stackoverflow.com/questions/17663186/… — Rietty
– Rietty, Commented Feb 4, 2019 at 22:13

scohe001 · Accepted Answer · 2019-02-04 22:13:49Z

Right now, you're calling the std::vector default constructor, however there's also a constructor that takes a size and item value. For the full list, see the cppreference page.

So you can actually do this:

vector<vector<vector<Cube>>> grid(10, vector<vector<Cube>>(10, vector<Cube>(10, Cube());

Which will give you a 10x10x10 3D vector filled with Cube() (default Cube) objects.

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