def include_any?(*items)
      items = items.first if items.length == 1 && items.first.kind_of?(Array)
      !(self & items).empty?
    end
def include_any?(*items)
      items = items.first if items.length == 1 && items.first.kind_of?(Array)
      !(self & items).empty?
    end
Returns whether the Array contains any of the items.

   [1, 2, 3].include_any?(1, 2)  #=> true
   [1, 2, 3].include_any?(1, 4)  #=> true
   [1, 2, 3].include_any?(4, 5)  #=> false