[Python-Dev] [numpy wishlist] Interpreter support for temporary elision in third-party classes

[Greg Ewing]

Julian Taylor wrote:
> tp_can_elide receives two objects and returns one of three values:
> * can work inplace, operation is associative
> * can work inplace but not associative
> * cannot work inplace

Does it really need to be that complicated? Isn't it
sufficient just to ask the object potentially being
overwritten whether it's okay to overwrite it?
I.e. a parameterless method returning a boolean.

-- 
Greg