StackRating
An Elo-based rating system for Stack Overflow
Answers and rating deltas for
Is it possible to use` $sum` in the `$match` stage of mongo aggregation and how?
| Author | Votes | Δ |
|---|---|---|
| Mạnh Quyết Nguyễn | 1 | 0.00 |
Last visited: Jan 1, 2019, 8:55:20 AM