gistfile1.rb

class Foo
  attr_accessor :baz, :biff

   def initialize baz, biff
     @baz, @biff = baz, biff
   end

end

# Create an instance

f = Foo.new "bling", "blang"

# Access the state
puts f.baz
puts f.biff

f.biff = "Blong!"