StackRating
An Elo-based rating system for Stack Overflow
                
    Answers and rating deltas for
    How to check if a NSDictionary already has a key, and then add items under that same key?
| Author | Votes | Δ | 
|---|---|---|
| Lucas Eduardo | 2 | +3.45 | 
| WolfLink | 1 | -3.45 | 
Last visited: Sep 14, 2014, 5:07:29 AM