def from(start_position)
      unless start_position < self.length
        raise BinaryException.new("starting point must should be less than length")
      end
      return self[start_position, self.length - start_position]
    end
def from(start_position)
      unless start_position < self.length
        raise BinaryException.new("starting point must should be less than length")
      end
      return self[start_position, self.length - start_position]
    end
Comparator to Integer
 Generate new Binary instance that is subsequence of self (from specified position to end).