dolfin team mailing list archive

[Anders Logg <logg@xxxxxxxxx>]

On Sat, Dec 06, 2008 at 12:02:43PM +0100, Johan Hake wrote:
> On Friday 05 December 2008 18:02:07 Anders Logg wrote:
> > I'm having problems getting vector-valued constants working. Take a
> > look at
> >
> >     demo/pde/stokes/taylor-hood/python
> >
> > It reports
> >
> >     assert(isinstance(defaults[i], (dict, types.NoneType)),"Wrong type
> >     in 'defaults'")
> >    TypeError: 'NoneType' object is unsubscriptable
> >
> > It seems like defaults is set to None and then defaults is indexed.
> >
> > Any ideas?
> 
> Should be fixed now. I have added better argument checking to 
> compile_function. But you have to send in a tuple of strings to 
> compile_function if you want to produce a vector values function. A list is 
> interpreted as len(cppexpr) number of scalar functions.
> 
> This is a bit fragile, but it is documented in the Function doc string.

ok! I wasn't aware of the difference.

Maybe we should have both compile_function and compile_functions
instead of differentiating between tuples and lists?

There is already a compile_functions defined in compile_functions.py,
but that does not seem to be used. Should it be removed (and the name
reused for batch-processing functions)?

-- 
Anders

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