equal
  deleted
  inserted
  replaced
  
    
    
    43   | 
    43   | 
    44   | 
    44   | 
    45   | 
    45   | 
    46 val A = Set("a", "b", "c") | 
    46 val A = Set("a", "b", "c") | 
    47 pow(A, 3)  | 
    47 pow(A, 3)  | 
         | 
    48 pow(A, 3).size  | 
    48   | 
    49   | 
    49 val B = Set("a", "b", "") | 
    50 val B = Set("a", "b", "") | 
    50 pow(B, 4)  | 
    51 pow(B, 4)  | 
         | 
    52 pow(B, 4).size  |