Passing a 2d array of vector to a class constructor

Question

In my code, I have some data stored in an 2d array of vector and I'd like to use it in another class to process the data but I can't find a way to do that.

Here is a sample of what I tried:

vector<IndividualData> vecArray[5][5]; // The one I want to pass to the class

MyClass::MyClass(vector<IndividualData> data[][5], ...):_data(data)

Is there a good way to do that?

I also tried with the std::array but I can't make it work:

array<array<vector<IndividualData>, 5>, 5> testVec; // Ther one I want to pass to the class

MyClass::MyClass(array<array<vector<IndividualData>, 5>, 5>& data, ...): _data(data)                                                                                      

When I want to use it in the class, I get the following error:

Type 'array<array<vector, 5>, 5>' does not provide a subscript operator

With

printf("%d\r\n", _data[0][0][0].param);

and

array<array<vector<IndividualData>, 5>, 5>& _data;

Thank's in advance for your replies

Answer 1

This works for me:

using My2DArrayOfVec = std::array<std::array<std::vector<IndividualData>, 5>, 5>;

class MyClass
{
   My2DArrayOfVec _data;
public:
   MyClass(My2DArrayOfVec const& data, ...) : _data(data) {}
   void useIt() const { printf("%d\r\n", _data[0][0][0].param); }
};

By having an alias, I always use the same types, My2DArrayOfVec , inside and outside of my class even when I'm experimenting.