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Answers and rating deltas for
In Rails, how do I write a validation rule to validate that both fields should be present or neither
| Author | Votes | Δ |
|---|---|---|
| Glyoko | 1 | +4.07 |
| Daniel Peñaloza | 0 | -2.12 |
| DiodonHystrix | 0 | -1.95 |
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