dolfin team mailing list archive

[Anders Logg <logg@xxxxxxxxx>]

On Sun, Jun 21, 2009 at 08:32:23PM +0200, Johan Hake wrote:
> On Saturday 20 June 2009 13:10:46 Garth N. Wells wrote:
> > I tried to do
> >
> >    u0.vector() = u1.vector()
> >
> > where u0 and u1 are both discrete functions, in PyDOLFIN but it doesn't
> > work so I'm using
> >
> >    u0.vector().assign( u1.vector() )
> 
> This is the correct way to do it. Assignment operators are just ignored for 
> the dynamically typed languges supported by SWIG. We therefore rename the 
> foo.operator= to foo.assign. 
> 
> However for the Vector and Matrix interfaces we also support the numpy 
> lookalike assignment:
> 
>   v[:] = u
> 
> and
> 
>   A[:,:] = B
> 
> I have talked to Anders about removing both v.assign and v.set(double *) 
> and "force" the PyDOLFIN users to use the numpy assignments.
> 
> Johan

Yes, I think that's a good idea. It reduces the number of options and
makes users aware of the nice slicing interface.

-- 
Anders

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