dolfin team mailing list archive

[Johan Hake <johan.hake@xxxxxxxxx>]

On Saturday 23 January 2010 06:00:32 Garth N. Wells wrote:
> In C++, we can treat a Constant as a double, e.g.
> 
>   Constant dt(0.1)
>   double t = 0.0l
>   t += dt
> 
> but this doesn't work in Python. Is there an elegant was to do this? Or
> is it just a case of defining __add__, etc in constant.py?

No, as you are not adding something to Constant ;)

But we might want to rename the double() operator in cpp.Constant to 
__float__(self) in the SWIG interface, so one can do the above.

I can fix this if you haven't.

Johan