ufl team mailing list archive

["Marie E. Rognes" <meg@xxxxxxxxx>]

On 06/29/11 11:06, Martin Sandve Alnæs wrote:
> I did some changes and want FFC to be updated to follow this, but I
> did it in a non-breaking way. Let me explain.
>
>
> test.ufl:
> V = FiniteElement("CG", triangle, 1)
> unknown = Coefficient(V)


This is not what the reserved name unknown was "designed" for and has 
been used for.
(It was intended for answering "which Coefficient is the unknown?" and 
automated derivatives with respect to that.)



> Interactive python session:
>
> In [1]: from ufl.algorithms import load_ufl_file
>
> In [2]: filedata = load_ufl_file("test.ufl")
>
> In [3]: filedata.object_names
> Out[3]:
> {24282848: 'V',
>   24339344: 'unknown',
>   'unknown': Coefficient(FiniteElement('Lagrange', Cell('triangle',
> Space(2)), 1, None), 0)}
>
> In [4]: filedata.reserved_objects
> Out[4]: {'unknown': Coefficient(FiniteElement('Lagrange',
> Cell('triangle', Space(2)), 1, None), 0)}
>
> In [5]: filedata.object_by_name
> Out[5]:
> {'V': FiniteElement('Lagrange', Cell('triangle', Space(2)), 1, None),
>   'unknown': Coefficient(FiniteElement('Lagrange', Cell('triangle',
> Space(2)), 1, None), 0)}
>
>
> I want to remove 'unknown' from the 'object_names' so that
> it is in fact a mapping from id(object) to name of object.
> I have not removed it as you can see above, but have added
> another dict 'reserved_objects' which currently only holds
> 'unknown' if it is present. There is a list of reserved names
> that can easily be extended. It would be nice if FFC could
> update to this change so I can remove 'unknown' from object_names.

Ok, stop by and let's sort out something sensible quickly :-)

--
Marie


> Martin
>
>
> On 29 June 2011 10:51, Martin Sandve Alnæs<martinal@xxxxxxxxx>  wrote:
> > What has changed?
> >
> > Martin
> >
> >
> > On 28 June 2011 21:50, Marie E. Rognes<meg@xxxxxxxxx>  wrote:
> > > Sometime between Tuesday 11-06-07 at approx 02.20 and now it seems that the
> > > handling of the reserved variable name "unknown" in form files has changed.
> > > Does anyone know anything about this?
> > >
> > > --
> > > Marie
> > >
> > > _______________________________________________
> > > Mailing list: https://launchpad.net/~ufl
> > > Post to     : ufl@xxxxxxxxxxxxxxxxxxx
> > > Unsubscribe : https://launchpad.net/~ufl
> > > More help   : https://help.launchpad.net/ListHelp