Magic First and Last Indicator in a Loop in Ruby/Rails?

Question

Ruby/Rails does lots of cool stuff when it comes to sugar for basic things, and I think there\'s a very common scenario that I was wondering if anyone has done a helper or s

Answer 1

KISS

arr.each.with_index do |obj, index|
  p 'first' if index == 0        
  p 'last' if index == arr.count-1                  
end