def contains?(data)
      return true if full?
      hash_funcs.times do |i|
        hash = to_hash(data, i)
        return false unless check_bit(hash)
      end
      true
    end
def contains?(data)
      return true if full?
      hash_funcs.times do |i|
        hash = to_hash(data, i)
        return false unless check_bit(hash)
      end
      true
    end
Returns true if the given data matches the filter
 @param [String] data The data to check the current filter
 @return [Boolean] true if the given data matches the filter