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Answers and rating deltas for
how can I manipulate data frame based on several columns strings
| Author | Votes | Δ |
|---|---|---|
| Barker | 4 | 0.00 |
Last visited: Nov 15, 2016, 6:06:33 PM
| Author | Votes | Δ |
|---|---|---|
| Barker | 4 | 0.00 |