[Python-Dev] any support for a methodcaller HOF? (original) (raw)
Jean-Paul Calderone exarkun at divmod.com
Fri Feb 3 17:31:44 CET 2006
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On Fri, 3 Feb 2006 07:00:26 -0800, Alex Martelli <aleaxit at gmail.com> wrote:
On Feb 3, 2006, at 6:47 AM, Giovanni Bajo wrote: ... use itemgetter and friends but the "correct" way of doing a defferred "x[1]" should let you write "x[1]" in the code. This is my main opposition to partial/itemgetter/attrgetter/methodcaller: they allow deferred execution using a syntax which is not equivalent to that of immediate execution. I understand your worry re the syntax issue. So what about Michael Hudson's "placeholder class" idea, where X[1] returns the callable that will do x[1] when called, etc? Looks elegant to me...
FWIW,
<http://cvs.twistedmatrix.com/cvs/sandbox/glyph/eacher.py?view=markup&rev=12804> <http://cvs.twistedmatrix.com/cvs/sandbox/cake.py?view=markup&rev=12804>
Jean-Paul
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