StackRating
An Elo-based rating system for Stack Overflow
Answers and rating deltas for
MongoDB: aggregation - group condition if not empty
| Author | Votes | Δ |
|---|---|---|
| rodrigovr | 2 | 0.00 |
Last visited: Jan 1, 2016, 10:22:34 PM
| Author | Votes | Δ |
|---|---|---|
| rodrigovr | 2 | 0.00 |