dolfin team mailing list archive

[Anders Logg <logg@xxxxxxxxx>]

On Wed, Dec 03, 2008 at 01:54:29PM +0100, Martin Sandve Alnæs wrote:
> (In C++)
> 
> Since a Constant doesn't have a function space, Coefficient::attach creates one.
> Definitely not what I would expect. What are the side effects of this?
> 
> A simple way that this may cause problems is:
> 
> Constant c;
> MyForm0 a0(...);
> MyForm1 a1(...);
> a0.d = c;
> a1.e = c;
> 
> Now consider that a0 and a1 may have different
> spaces for their coefficients d and e. Not intuitive!

Good point, I thought I had implemented a check for this.

I've pushed an update. Take a look in Coefficient::attach now and see
if it looks better.

-- 
Anders

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