StackRating
An Elo-based rating system for Stack Overflow
Answers and rating deltas for
Ruby on Rails - undefined method `persisted?' for nil:NilClass
| Author | Votes | Δ |
|---|---|---|
| Kamen Kanev | 1 | +2.13 |
| max | 1 | +0.23 |
| Hannah | 0 | -3.94 |
Last visited: Aug 26, 2016, 2:34:25 PM