similar to: UseMethod() fails to (PR#1176)

I raised the questions below a couple of months ago by sending it to the developers mailing list, but I don't know if it got through since no one replied to it. Looking at the [R] distribution, the UseMethod() is used in the following way: alias <- function(object, ...) UseMethod("alias") or barplot <- function(height, ...) UseMethod("barplot") What I

Dear R developers, I will ask a very straightforward question concerning UseMethod's future, because people depending on my code wonder what will happen to it next. In R v2.0.1 NEWS it says o The undocumented use of UseMethod() with no argument is now formally deprecated. and in the R v2.0.1 help(UseMethod) it says 'UseMethod' accepts a call with no arguments and tries to

Hi, although I've done S3 dispatching for more than a decade now, I think I managed to overlook/avoid the following pitfall when using NextMethod(): If you explicitly pass argument '...' to NextMethod(), you will effectively pass those argument twice to the "next" method! EXAMPLE: foo0 <- function(...) UseMethod("foo0"); foo1 <- function(...)

Full_Name: Henrik Bengtsson Version: R v1.7.1 OS: WinXP Pro, Solaris 9 Submission from: (NULL) (130.235.2.229) A colleague of mine who is new to R had problems setting up his .Rprofile and we tracked it down to the following. On both WinXP and Solaris with Rv1.7.1 we noticed that the *last* line in .Rprofile has to have a *newline* to be evaluated. For instance, starting R with the following

Full_Name: Henrik Bengtsson Version: 1.6.0, 1.5.1 OS: WinXP Pro Submission from: (NULL) (128.250.252.82) The following example, which I tested on both R v1.5.1 and R v1.6.0 on WinXP Pro, shows the problem I encountered when trying to use the class attribute of an environment: # Define method print() for class Environment C print(e) # gives: # [1] "An Environment!" # Exit [R]

When using write.table() to write data frames the integer columns are padded with unnecessary spaces (0x20) so that these columns are right align if you look at them in a text editor. However, I think it is quite a vast of file size. For instance, I am reading a tab-delimited 4200kb microarray data file and writing it back verbatim using write.table() and it becomes 5100kb, a 20% increase. Is this

Using: untrace(methods::conformMethod) at <- c(12,4,3,2) str(body(methods::conformMethod)[[at]]) ## language omittedSig <- omittedSig && (signature[omittedSig] != "missing") cc <- 0L trace(methods::conformMethod, tracer = quote({ cc <<- cc + 1L print(cc) if (cc == 31) { ## manually identified untrace(methods::conformMethod)

Full_Name: Henrik Bengtsson Version: 1.3.1 OS: Sun Solaris 8 Submission from: (NULL) (130.235.3.49) I have been trying to install [R] v1.3.1 locally on a Sun Solaris 8 machine and I ran into the (already known) perl problems that express theselves as: Bare word found where operator expected at /usr/matcent/hb/R/R-1.3.1/share/perl/R/Rdconv.pm line 1390, near "$txtout mywrap"

Full_Name: Henrik Bengtsson Version: R v1.4.0 OS: Solaris 8 Submission from: (NULL) (130.235.3.49) When I am trying the following on Rv1.4.0 on Solaris 8, I get that the "cannot close output sink connection": % R --vanilla tmpfile <- tempfile() # Create a filename that does not exist for(k in 1:100) { cat(k, ": "); try(fh <- file(tmpfile, "r"))

Hi, The 2 man pages give inconsistent description of class(): Found in ?class: If the object does not have a class attribute, it has an implicit class, ?"matrix"?, ?"array"? or the result of ?mode(x)? (except that integer vectors have implicit class ?"integer"?). Found in ?UseMethod: Matrices and arrays have class ?"matrix"?

I'm having an odd problem with strsplit (well I think it's strplit that's causing the problem). When I run the code below as follows: str(parseFormulaMin(y +x +d ~ b +d +e| a * b)) I expect to get List of 3 $ y: chr "y+x+d" $ x: chr "b+d+e" $ g: chr "a*b" But about half the time I get List of 3 $ y: chr "y+x+d" $ x: chr

I'm having an odd problem with strsplit (well I think it's strplit that's causing the problem). When I run the code below as follows: str(parseFormulaMin(y +x +d ~ b +d +e| a * b)) I expect to get List of 3 $ y: chr "y+x+d" $ x: chr "b+d+e" $ g: chr "a*b" But about half the time I get List of 3 $ y: chr "y+x+d" $ x: chr

>>>>> Henrik Bengtsson >>>>> on Sun, 29 Oct 2023 10:42:19 -0700 writes: > Hello, > the fix of PR18612 > (https://bugs.r-project.org/show_bug.cgi?id=18612) in > r85380 > (https://github.com/wch/r-source/commit/2653cc6203fce4c48874111c75bbccac3ac4e803) > caused a change in `dim<-()`. Specifically, in the past,

Since you're already using bang-bang ;) library(rlang) dots1 <- function(...) as.list(substitute(list(...)))[-1L] dots2 <- function(...) as.list(substitute(...())) dots3 <- function(...) match.call(expand.dots = FALSE)[["..."]] dots4 <- function(...) exprs(...) bench::mark( dots1(1+2, "a", rnorm(3), stop("bang!")), dots2(1+2, "a",

Hi! The kernlab function kpca() mentions that new observations can be transformed by using predict. Theres also an example in the documentation, but as you can see i am getting an error there (As i do with my own data). I'm not sure whats wrong at the moment. I haven't any predict functions written by myself in the workspace either. I've tested it with using the matrix version and the

I run checks with R-devel rev. 76756 on several of my packages which use S4, with no ill effects. With the risk of not adding much, it seems that Martin's example, which I repeat below, suggests a crossover between several "signatures" involved here - the signature of the generic, the signature of the method (the argument for setMethod()), and the signature of the function object

Hi Martin, Henrik, I actually like this change. Makes a lot of sense IMO that dim(x) <- dim(x) be a no-op, or, more generally, that foo(x) <- foo(x) be a no-op for any setter/getter combo. FWIW S4Arrays::set_dim() does that too. It also preserves the dimnames if the right value is only adding or dropping outermost (ineffective) dimensions: ??? > x <- array(1:6, dim=c(2,3,1),

On 11/18/19 9:18 AM, Martin Maechler wrote: >>>>>> Henrik Bengtsson >>>>>> on Sun, 17 Nov 2019 14:31:07 -0800 writes: > > $ R --vanilla R version 3.6.1 (2019-07-05) -- "Action of > > the Toes" Copyright (C) 2019 The R Foundation for > > Statistical Computing Platform: x86_64-pc-linux-gnu > > (64-bit) ...

On 10/15/07, Henrik Bengtsson <hb at maths.lth.se> wrote: > [As agreed, CC:ing r-devel since others might be interested in this as well.] > > Hi. > > On 10/15/07, Dirk Eddelbuettel <edd at debian.org> wrote: > > > > Hi Hadley, > > > > On 15 October 2007 at 09:51, hadley wickham wrote: > > | Would you consider making digest a generic

> On 28 Jun 2019, at 16:03 , Martin Maechler <maechler at stat.math.ethz.ch> wrote: > >>>>>> Henrik Bengtsson >>>>>> on Thu, 27 Jun 2019 16:00:39 -0700 writes: > >> Using: >> >> untrace(methods::conformMethod) >> at <- c(12,4,3,2) >> str(body(methods::conformMethod)[[at]]) >> ## language omittedSig