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(doNothing-,
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
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:/ = DISCREPANCY
