Hi,
on Windows 7 (tested on NTFS file system) and R-devel:
1. file.info("C:/") gives NAs whilst file.exists("C:/") gives TRUE.
Instead you have to do file.info("C:/.").
2. Any number of dots will do, e.g.
identical(file.info("C:/."), file.info("C:/.")) == TRUE
DETAILS:
# C:/ => DISCREPA
The distinction here is "simple inheritance" ("Software for Data
Analysis", p. 346). Your first example is simple inheritance (would be
clearer if you used the contains= argument). In the second version you
supply an explicit coerce method, so method dispatch can no longer just
pass in the o
As a follow-up, I managed to isolate the problem I sent earlier this
week, and reduced it to a small case (I'm using R 2.13.1,
i486-pc-linux-gnu (32-bit)).
The following script does what I expect:
setClass("A", representation(x = "numeric"))
setClass("AB", representation("A"))
setGeneric("doNot
