StackRating
An Elo-based rating system for Stack Overflow
                
    Answers and rating deltas for
    I am trying to use the mutate function with conditions to create a new column from existing data
| Author | Votes | Δ | 
|---|---|---|
| Chuck P | 3 | 0.00 | 
Last visited: Oct 18, 2020, 5:58:00 PM