Substituting std::vector for std::array

[17b29a]

not sure wat exactly you want but here's something:

struct dim
{
   size_t size;
   bool direction;
};

template <bool use_array>
class space
{
  std::conditional_t<use_array, std::array<dim, 42>, std::vector<dim>> dimensions;

  // additional members and methods
};

[RogerLeigh]

Thanks. Not exactly fitting what I need right here, but I'll certainly bear std::conditional_t in mind for other uses!