[ww520]

Will bar become 20 eventually? In the next cycle perhaps?

So there will be 3 cycles?

   1: foo = 1, next(foo = 10)
      bar = undef, next(bar = 2)
   2: foo = 10
      bar = 2, next(bar = 20)
   3: foo = 10
      bar = 20

Does the above sound right?