Playing around with an OpenMDAO slot containing a custom object

variable_in_slot

  >> z = Component()
  >> z.add_trait('x', Slot(TransientScalar, iotype='in'))
  >> print z.x
  None

  >> # Type-checking is now enforced (only Trasientscalars allowed)
  >> z.x="Hello"
  Traceback (most recent call last):
  ...
  TypeError: : x must be an instance of class 'TransientScalar'


  >> z.x = TransientScalar(points=np.sin(np.linspace(0,2*np.pi,20)),
                      t=np.linspace(0,1,20))

  >> print z.x # Note, behavior determined by __repr__ function I added
  Now Printing...

  >> print z.x.points
  [  0.00000000e+00   3.24699469e-01   6.14212713e-01   8.37166478e-01
     9.69400266e-01   9.96584493e-01   9.15773327e-01   7.35723911e-01
     4.75947393e-01   1.64594590e-01  -1.64594590e-01  -4.75947393e-01
    -7.35723911e-01  -9.15773327e-01  -9.96584493e-01  -9.69400266e-01
    -8.37166478e-01  -6.14212713e-01  -3.24699469e-01  -2.44929360e-16]