Thanks Martin. H.
Martin Maechler wrote:
"HP" == Hervé Pagès <hpa...@fhcrc.org>
on Thu, 03 Jun 2010 13:25:10 -0700 writes:
HP> Hi,
HP> I just realized that a named empty list is displayed the same
HP> way as an empty list:
>> list(aa=2:5)[0]
HP> list()
>> list()
HP> list()
HP> For empty atomic vectors, the print method makes the difference:
>> c(aa=3L)[0]
HP> named integer(0)
>> integer(0)
HP> integer(0)
HP> Maybe lists could do that too?
Yes, I agree. I have had at least one situation in the past
where I had even been confused for a few minutes by this.
I'm about to add it for R-devel [2.12.0] (only; considering it a
new feature).
Martin Maechler, ETH Zurich
--
Hervé Pagès
Program in Computational Biology
Division of Public Health Sciences
Fred Hutchinson Cancer Research Center
1100 Fairview Ave. N, M2-B876
P.O. Box 19024
Seattle, WA 98109-1024
E-mail: hpa...@fhcrc.org
Phone: (206) 667-5791
Fax: (206) 667-1319
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