Re: [Feature Request] dict.setdefault()

Date	2011-04-11 23:59 +0100
From	MRAB <python@mrabarnett.plus.com>
Subject	Re: [Feature Request] dict.setdefault()
References	<48897e75-c02c-43c7-9f46-39da4bcc406d@p16g2000vbi.googlegroups.com> <1302560207.11756.1.camel@localhost.localdomain> <4DA38391.1040507@mrabarnett.plus.com> <BANLkTikhS0C05q+349XePW-bn94C97EUYg@mail.gmail.com>
Newsgroups	comp.lang.python
Message-ID	<mailman.230.1302562770.9059.python-list@python.org> (permalink)

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On 11/04/2011 23:44, Chris Angelico wrote:
> On Tue, Apr 12, 2011 at 8:41 AM, MRAB<python@mrabarnett.plus.com>  wrote:
>> I'm not sure that "setdefault" should take **kw args for this because
>> of its existing argument structure (key + optional value).
>>
>> A new method like "updatedefault" may be better, IMHO. It would act
>> like "update" except that it wouldn't overwrite existing values.
>
> Wouldn't x.updatedefault(y) be pretty much y.update(x) ?
>
I suppose it would, except that it wouldn't be in-place as such, and it
wouldn't be as efficient if you're wanting to default only a few
entries in a larger dict.

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Thread

[Feature Request] dict.setdefault() rantingrick <rantingrick@gmail.com> - 2011-04-11 14:35 -0700
  Re: [Feature Request] dict.setdefault() Westley Martínez <anikom15@gmail.com> - 2011-04-11 15:16 -0700
  Re: [Feature Request] dict.setdefault() MRAB <python@mrabarnett.plus.com> - 2011-04-11 23:41 +0100
    Re: dict.setdefault() rantingrick <rantingrick@gmail.com> - 2011-04-11 19:58 -0700
      Re: dict.setdefault() Westley Martínez <anikom15@gmail.com> - 2011-04-12 07:02 -0700
  Re: [Feature Request] dict.setdefault() Chris Angelico <rosuav@gmail.com> - 2011-04-12 08:44 +1000
  Re: dict.setdefault() Raymond Hettinger <python@rcn.com> - 2011-04-11 15:49 -0700
  Re: [Feature Request] dict.setdefault() Chris Rebert <clp2@rebertia.com> - 2011-04-11 15:53 -0700
  Re: [Feature Request] dict.setdefault() MRAB <python@mrabarnett.plus.com> - 2011-04-11 23:59 +0100
  Re: [Feature Request] dict.setdefault() Tim Chase <python.list@tim.thechases.com> - 2011-04-11 18:25 -0500
    Re: dict.setdefault() Raymond Hettinger <python@rcn.com> - 2011-04-11 17:17 -0700

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