ISP

gistfile1.rb

class Reader
  def read
    file = File.new("readfile.rb", "r")
    return file.gets
  end
end

class Writer
  def write(chars)
    file = File.new("readfile.rb", "w")
    file.puts chars
  end
end

def copy(reader, writer)
  chars = reader.read
  writer.write(chars)
end