Compiler hang when initializing large std::arrays

Question

I need to initialize a very large multidimensional std::array of data:

class Thing;

class World
{
public:
    World() : space{nullptr} {};
             


        

Answer 1

As you are using unique_ptr it looks like you are looking for a sparse 3d-matrix like type. For implementing a sparse matrix you could have a look at What is the best way to create a sparse array in C++? and as an implementation detail you could use Boost Multi-index for implementing fast access to all dimensions.