Correction of the tutorial.

doc/tutorial/loop.txt

@@ -140,7 +140,7 @@ The full documentation can be found in the library: :ref:`Scan <lib_scan>`.
   X = T.matrix("X")
   results, updates = theano.scan(lambda i, j, t_f:T.cast(X[i,j]+t_f, floatX), \
                     sequences=[T.arange(X.shape[0]), T.arange(X.shape[1])], \
-                    outputs_info=np.zeros_like(0., dtype=floatX))
+                    outputs_info=np.asarray(0., dtype=floatX))
   result = results[-1]
   compute_trace = theano.function(inputs = [X], outputs=[result])