[Python-Dev] PEP 443 - Single-dispatch generic functions
Guido van Rossum
guido at python.org
Thu May 23 17:14:50 CEST 2013
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Thu May 23 17:14:50 CEST 2013
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Ok, happy bikeshedding. I'm outta here until that's settled. :-) On Thu, May 23, 2013 at 7:58 AM, Łukasz Langa <lukasz at langa.pl> wrote: > On 23 maj 2013, at 16:49, Guido van Rossum <guido at python.org> wrote: > >> Łukasz, are there any open issues? Otherwise I'm ready to accept the PEP. > > There's one. Quoting the PEP: > > "The dispatch type is currently specified as a decorator argument. The > implementation could allow a form using argument annotations. This usage > pattern is out of scope for the standard library (per PEP 8). However, > whether this registration form would be acceptable for general usage, is > up to debate." > > I feel that the PEP should explicitly allow or disallow for the > implementation to accept dispatch on annotations, e.g.: > > @func.register > def _(arg: int): > ... > > versus > > @func.register(int) > def _(arg): > ... > > -- > Best regards, > Łukasz Langa > > WWW: http://lukasz.langa.pl/ > Twitter: @llanga > IRC: ambv on #python-dev > -- --Guido van Rossum (python.org/~guido)
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