StackRating
An Elo-based rating system for Stack Overflow
                
    Answers and rating deltas for
    Given an array of NSDictionary object how to get all the keys?
| Author | Votes | Δ | 
|---|---|---|
| JAL | 2 | +1.14 | 
| Ajharudeen khan | 2 | +2.41 | 
| Tommy | 1 | -1.44 | 
Last visited: Aug 26, 2016, 2:34:25 PM