| Reducing the use of nullable types through non-null by default and monotonic non-null Recent countries visiting this post |  |
 | 5 | United States |
 | 1 | |
 | 1 | Russian Federation |
| Reducing the use of nullable types through non-null by default and monotonic non-null Recent countries visiting this post | |
| 5 | United States |
| 1 | |
| 1 | Russian Federation |