coffeescript重构

Question

是否有任何coffeescript特定的技巧,使这看起来更整洁:

index = (->
          if segment == 'index'
            return 0
          else if segment == 'inbox'
            return 2

          1
        )()

Answer 1

是的,一个switch表达式:

index = switch segment
  when 'index' then 0
  when 'inbox' then 2
  else 1