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Answers and rating deltas for
How can I delete certain rows according to two columns which have symmetricl values in data.table in
| Author | Votes | Δ |
|---|---|---|
| Frank | 2 | +0.63 |
| MichaelChirico | 2 | +1.20 |
| chinsoon12 | 1 | -0.88 |
| onyambu | 1 | -0.96 |
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