| 34 | } |
| 35 | |
| 36 | int main() { |
| 37 | { |
| 38 | te::var<Drawable> auto drawable = Square{}; |
| 39 | drawable.draw(std::cout); // prints Square |
| 40 | } |
| 41 | |
| 42 | { |
| 43 | te::var<Drawable> auto drawable = Circle{}; |
| 44 | drawable.draw(std::cout); // prints Circle |
| 45 | } |
| 46 | |
| 47 | { |
| 48 | auto drawable = Square{}; |
| 49 | draw(drawable); // prints Square |
| 50 | } |
| 51 | |
| 52 | { |
| 53 | auto drawable = Circle{}; |
| 54 | draw(drawable); // prints Circle |
| 55 | } |
| 56 | } |
| 57 | #else |
| 58 | int main() {} |
| 59 | #endif |