bugui::has_grid Concept Reference

Concept definition

template<typename Tp>
concept bugui::has_grid =  is_valid_id<std::remove_cvref_t
                               <decltype(Tp::grid::ids()[0][0])>>
                   && requires
{
  Tp::grid::ids().size() > 2;
  Tp::grid::ids()[0].size() > 2;
}