fun, 
                  
                  
                  distance(p1,p2)
                  
                  
                  , to the first and second el , the second and third el and so on. Like this:
                  
                  
                  distance(1,2)
                  
                  
                  distance(2,3)
                  
                  
                  distance(3,4)
                  
                  
                  ...
                  
                  
                  What's the idiomatic way to do it?
                  
                  
                
Triple backticks in a new line Or single backticks inline
In regards to your question, probably head::tail recursion
Обсуждают сегодня