| 1 | If so, it matches it. | |
| 2 | It matches any single element in the document tree. | |
| 3 | That way I can match the street signs with the directory!' she said, raising her voice indignantly. | |
| 4 | In this example, and update occurs if the target and source have matching row. | |
| 5 | Pattern matching is also useful for the design problem where you need to get at data inside an object, but only in special circumstances. |