On 13/10/12 19:05, Yuval Greenfield wrote:
A PEP for defining operators sounds interesting for 4.0 indeed. Though it might be messy to allow a module to meddle with the python syntax.
You mean more than classes already do? :)
Perhaps instead I would like it if all operators were objects with e.g. special __infix__ methods.
I believe that Haskell treats operators as if they were function objects, so you could do something like: negative_values = map(-, values) but I think that puts the emphasis on the wrong thing. If (and that's a big if) we did something like this, it should be a pair of methods __op__ and the right-hand version __rop__ which get called on the *operands*, not the operator/function object: def __op__(self, other, symbol) -- Steven