Labels

Both continue and break can optionally take a label argument which is used to break out of nested loops:

1. ```
   fn main() {
   ```
2. ```
       let s = [[5, 6, 7], [8, 9, 10], [21, 15, 32]];
   ```
3. ```
       let mut elements_searched = 0;
   ```
4. ```
       let target_value = 10;
   ```
5. ```
       'outer: for i in 0..=2 {
   ```
6. ```
           for j in 0..=2 {
   ```
7. ```
               elements_searched += 1;
   ```
8. ```
               if s[i][j] == target_value {
   ```
9. ```
                   break 'outer;
   ```
10. ```
                }
    ```
11. ```
            }
    ```
12. ```
        }
    ```
13. ```
        print!("elements searched: {elements_searched}");
    ```
14. ```
    }
    ```

• Labeled break also works on arbitrary blocks, e.g.

1. #![allow(unused)] 2. fn main() { 3. 'label: { 4. break 'label; 5. println!("This line gets skipped"); 6. } 7. }