class String
  def char_split(chars)
    parser = lambda do |line, results|
      line.index(chars) == nil \
      ? line.length > 0 \
        ? results << line \
        : results \
      : line.index(chars) == 0 \
        ? parser[line[chars.length..-1], results] \
        : parser[line[line.index(chars) + chars.length..-1], results << line[0..line.index(chars) - 1]]
    end
    
    parser[self.dup, Array.new]
  end
end