[Python-Dev] PEP 443 - Single-dispatch generic functions
ethan at stoneleaf.us
Thu May 23 22:19:20 CEST 2013
On 05/23/2013 01:10 PM, Łukasz Langa wrote:
> On 23 maj 2013, at 20:59, PJ Eby <pje at telecommunity.com> wrote:
>> As to the ability to do multiple types registration, you could support
>> it only in type annotations, e.g.:
>> def doit(foo: [int, float]):
> Initially I thought so, too. But it seems other people might think this
> means "a sequence with the first element being an integer, and the second
> a float". The BDFL seems to have yet a different idea:
> This is clearly material for a separate PEP, wink wink, nudge nudge.
> To the point though. Based on this, and the fact PEP 8 currently disallows
> annotations within the standard library, I came to the conclusion that
> currently we should not include the annotation-driven form.
>> I generally lean towards returning the undecorated function, so that if you say:
>> def do_int(foo: int):
> Me too. The PEP has been updated to specify that explicitly.
So with this decision made, are there any open issues left? Or can we invite Guido back to the discussion? ;)
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