dolfin team mailing list archive

[Anders Logg <logg@xxxxxxxxx>]

On Thu, Oct 16, 2008 at 10:42:35AM +0100, Garth N. Wells wrote:
>  From inspection it looks nice to me. Cleaner and easier to follow than 
> the current version, and the ownership issues are ironed out.
> 
> Is there a sensible way to test it other than renaming NewFunction -> 
> Function?
> 
> Garth

That seems to be the simplest option, but let's wait until after the
release.

-- 
Anders


> 
> Anders Logg wrote:
> > I've finished up the new implementation of the Function class.
> > It's untested, but I'm pretty sure it works... :-) I'm very happy with
> > the way it turned out.
> > 
> > Anyway, it would be good if anyone interested would review the design
> > and implementation (in detail, including function names etc).
> > 
> > The Function class is central so it would be good if we could agree on
> > a design and keep it stable for some time (like we've managed with the
> > linear algebra interfaces).
> > 
> > The main changes compared to the old/current design are as follows:
> > 
> > 1. Introduction of a FunctionSpace class. A FunctionSpace is defined
> > by a Mesh, a FiniteElement and a DofMap.
> > 
> > 2. Removal of the class hierarchy. Only one class Function remains.
> > This acts dynamically either as a user-defined function (if the vector
> > of coefficients is null) or as the old DiscreteFunction.
> > 
> > 3. The proliferation of constructors has been removed. There is
> > essentially only one constructor, namely
> > 
> >   v = Function(V)
> > 
> > An additional class named Constant should be added to handle constant
> > functions, overloading eval() and providing a bunch of constructors
> > (scalar, vector, tensor).
> > 
> > When we've settled on the design/implementation of Function and
> > FunctionSpace, we need to do a round of editing of the DofMap class.
> > 
> > 
> > 
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