StackRating
An Elo-based rating system for Stack Overflow
                
    Answers and rating deltas for
    How to extend arithmetic operators to support optional values as well - Swift
| Author | Votes | Δ | 
|---|---|---|
| Sweeper | 3 | +0.45 | 
| Sajjon | 2 | +2.43 | 
| Frankenstein | 0 | -0.51 | 
| Cristik | -1 | -0.64 | 
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