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Answers and rating deltas for
group_by, look up value for group, return value and original data.frame? (efficiently, using dplyr)
| Author | Votes | Δ |
|---|---|---|
| Ronak Shah | 2 | +1.55 |
| Ritchie Sacramento | 1 | -0.30 |
| Edward | 1 | +0.06 |
| stevec | 0 | -1.30 |
Last visited: Sep 5, 2020, 12:36:14 PM