[Python-Dev] PEP 443 - Single-dispatch generic functions

PJ Eby pje at telecommunity.com
Thu May 23 21:01:36 CEST 2013


On Thu, May 23, 2013 at 2:59 PM, PJ Eby <pje at telecommunity.com> wrote:
> I generally lean towards returning the undecorated function, so that if you say:
>
>     @func.register
>     def do_int(foo: int):
>         ...

Oops, forgot to mention:  one other advantage to returning the
undecorated function is that you can do this:

    @func.register(int)
    @func.register(float)
    def do_num(foo):
       ...

Which neatly solves the multiple registration problem, even without
argument annotations.


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