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In R, how can I add some specific columns from a dataframe to another dataframe when some values are
| Author | Votes | Δ |
|---|---|---|
| MatthewR | 2 | +4.03 |
| MrNetherlands | 1 | -0.03 |
| Lila | 0 | -3.99 |
Last visited: Sep 4, 2019, 3:46:46 PM