#include <SFML/Graphics/Drawable.hpp> #include <type_traits> static_assert(!std::is_constructible_v<sf::Drawable>); static_assert(!std::is_copy_constructible_v<sf::Drawable>); static_assert(std::is_copy_assignable_v<sf::Drawable>); static_assert(!std::is_nothrow_move_constructible_v<sf::Drawable>); static_assert(std::is_nothrow_move_assignable_v<sf::Drawable>);