[pypy-dev] getting rid of multimethods?

Christian Tismer tismer at stackless.com
Fri Jun 25 02:47:42 CEST 2004


Armin Rigo wrote:
> Hello,
> 
> On Thu, Jun 17, 2004 at 08:10:41AM +0200, Laura Creighton wrote:
> 
>>There is a niceness about how the multimethods group everything in one
>>place.
> 
> 
> Yes, their declarativeness is nice.  I don't think we should remove them, but
> maybe we should move them away from run-time.
> 
> It would be possible to use the multimethod declarations only to generate
> Python sources with the descriptors (i.e. the __add__&co methods).  The type
> switches would be generated too.
> 
> This is basically what Holger suggested for descroperation.py already.  I
> still think that it is overkill for descroperation.py, but for multimethods it
> would be helpful as a check, or if you prefer reading the generated Python
> source instead of the multimethod.py magic.

In a way, turning multi-methods into a meta-class like concept
that instantiates __add__ things on type creation time?
Sounds like a good compromize.

ciao - chris

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