peps: 4d6c827944c4 (original) (raw)

Mercurial > peps

changeset 4920:4d6c827944c4

Explicitly state that the default implementation is registered for `object` Thanks to Gustavo Carneiro for the suggestion.

Łukasz Langa lukasz@langa.pl
date	Fri, 31 May 2013 12:31:11 +0200
parents	92816a630302
children	38826efc5fe4
files	pep-0443.txt
diffstat	1 files changed, 7 insertions(+), 3 deletions(-)[+] [-] pep-0443.txt 10

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--- a/pep-0443.txt +++ b/pep-0443.txt @@ -134,13 +134,17 @@ argument:: Where there is no registered implementation for a specific type, its method resolution order is used to find a more generic implementation. +The original function decorated with @singledispatch is registered +for the base object type, which means it is used if no better +implementation is found. + To check which implementation will the generic function choose for a given type, use the dispatch() attribute::

fun.dispatch(float) <function fun_num at 0x104319058>

fun.dispatch(dict)
<function fun at 0x103fe4788>

fun.dispatch(dict) # note: default implementation
<function fun at 0x103fe0000> To access all registered implementations, use the read-only registry attribute:: @@ -152,7 +156,7 @@ attribute::

fun.registry[float] <function fun_num at 0x1035a2840> fun.registry[object]

<function fun at 0x103170788>

<function fun at 0x103fe0000> The proposed API is intentionally limited and opinionated, as to ensure it is easy to explain and use, as well as to maintain consistency with