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Answers and rating deltas for
add two columns using indexes in data.table in R
| Author | Votes | Δ |
|---|---|---|
| Roland | 3 | 0.00 |
Last visited: Feb 2, 2017, 11:48:35 AM
| Author | Votes | Δ |
|---|---|---|
| Roland | 3 | 0.00 |