[Zope3-dev] n-tuple adapters

[Chris Withers]

Shane Hathaway wrote:
> I came to the conclusion that we need a more flexible adapter registry. 
>   A traversal component is an adapter, not a view.  Adapters are always 
> registered for one input and one output interface, but in this case we 
> need two inputs.  There is no shortcut like representing the two inputs 
> as a single interface--that wouldn't work.  So we need to expand the 
> adapter registry to allow n-ary adapters (I once called them n-tuple 
> adapters.)  The tricky part will be to make it efficient.  I suspect we 
> don't need to worry about speed for an initial cut, though.

Didn't Steve A do some work on this a while back?

Chris