gistfile1.txt

def _sort(items, guest)
      items.sort do |item1, item2|
        if item1.guest_count(guest.application, guest.environment) == item2.guest_count(guest.application, guest.environment)
          item1.usedmem <=> item2.usedmem
        else
          item1.guest_count(guest.application, guest.environment) <=> item2.guest_count(guest.application, guest.environment)
        end
      end
    end
    
    ##### vs
    
    def _sort(items, guest)
      items.sort do |item1, item2|
          item1.guest_count(guest.application, guest.environment), item1.usedmem <=> item2.guest_count(guest.application, guest.environment),item2.usedmem
      end
    end