exists() and the mode argument (PR#576)
On Tue, 20 Jun 2000 J.C.Rougier@durham.ac.uk wrote:
The following seems to be odd behaviour:
fred <- 1:10
mode(fred) # "numeric"
exists("fred") # TRUE
exists("fred", mode="numeric") # FALSE
Unless I have misunderstood, the final evaluation should be TRUE,
as an object called "fred" exists and its mode is "numeric". In
Its `mode' is
typeof(fred)
[1] "integer" and so
exists("fred", mode="integer")
[1] TRUE
See ?exists
mode: the type of interest for the object.
^^^^
I think this needs to be re-written in the documentation, or do
people think it should be the value of mode? The latter appears
to be what the prototype uses, in that
exists("fred", mode="numeric")
[1] T
exists("fred", mode="integer")
[1] T
exists("fred", mode="double")
[1] T (sic)
Brian D. Ripley, ripley@stats.ox.ac.uk Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272860 (secr) Oxford OX1 3TG, UK Fax: +44 1865 272595 -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-devel mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-devel-request@stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._