[Python-Dev] getdefault(), the real replacement for setdefault() (original) (raw)

Thomas Wouters thomas at xs4all.net
Thu Feb 23 22:41:31 CET 2006

On Wed, Feb 22, 2006 at 10:29:08PM -0500, Barry Warsaw wrote:

d.getdefault('foo', list).append('bar')

Anyway, I don't think it's an either/or choice with Guido's subclass. Instead I think they are different use cases. I would add getdefault() to the standard dict API, remove (eventually) setdefault(), and add Guido's subclass in a separate module. But I /wouldn't/ clutter the built-in dict's API with onmissing().

+1. This is a much closer match to my own use of setdefault than Guido's dict subtype. I'm +0 on the subtype, but I prefer the call-time decision on whether to fall back to a default or not.

-- Thomas Wouters <thomas at xs4all.net>

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