gistfile1.txt

Iaction = Struct.new(:value, :status)

Reader = Struct.new(:filename) do
  def read
    Iaction.new File.read(filename), :ok
  rescue => e
    Iaction.new e, :err
  end
end

def readfile(filename)
  reader = Reader.new(filename).read
  case reader.status
  when :ok
    reader.value
  when :err
    #error handling logic
  else
    #something really bad happened
  end
end