StackRating
An Elo-based rating system for Stack Overflow
Answers and rating deltas for
Undefined method 'map' for ___ when using grouped_collection_select and simpleform
| Author | Votes | Δ |
|---|---|---|
| Marek Lipka | 0 | 0.00 |
Last visited: Sep 14, 2014, 5:07:29 AM