[Cython] [Pyrex] Proposed change to behaviour of "not None"

[Robert Bradshaw]

On Aug 22, 2008, at 8:46 AM, Hoyt Koepke wrote:

> Hello,
>
> I'm a relative newbie to cython/pyrex, so I won't be offended if this
> suggestion gets thrown out quickly as long as I learn something in the
> process.  From my googling, it seems that decorators aren't really
> supported by cython/pyrex yet
> (http://wiki.cython.org/enhancements/decorators) but are on cython's
> to-do list.

In the latest version, they're on Cython's done list (function  
decorators that is, and class decorators should be easy given that).

> It strikes me that decorators would be a natural way of
> handling this, i.e. having a @notNone decorator for functions that has
> the affect of adding "not None" to every argument.  If part of the
> reason for switching the default is that writing "not None" for every
> argument is awkward, this would be a reasonable middle ground.

Yes, that's a great idea. When I say I want to add it as a compiler  
option, I'm thinking like http://wiki.cython.org/docs/ 
compilerdirectives .

- Robert