similar to: R C api for 'inherits' S3 and S4 objects

Thank you Luke. That is why I don't use Rf_inherits but INHERITS which does not allocate, provided in the email body. I cannot do similarly for S4 classes, thus asking for some API for that. On Fri, Nov 1, 2019 at 5:56 PM Tierney, Luke <luke-tierney at uiowa.edu> wrote: > > On Fri, 1 Nov 2019, Jan Gorecki wrote: > > > Dear R developers, > > > > Motivated by

On Fri, 1 Nov 2019, Jan Gorecki wrote: > Thank you Luke. > That is why I don't use Rf_inherits but INHERITS which does not > allocate, provided in the email body. Your definition can allocate because STING_ELT can allocate. getAttrib can GC in general. Currently it would not GC or allocate in this case, but this could change. You can't assume thread-safety for calls into the R

On Fri, 1 Nov 2019, Jan Gorecki wrote: > Dear R developers, > > Motivated by discussion about checking inheritance of S3 and S4 > objects (in head matrix/array topic) I would light to shed some light > on a minor gap about that matter in R C API. > Currently we are able to check inheritance for S3 class objects from C > in a robust way (no allocation, thread safe). This is

Why does the following show a class attribute of "character" when using the interpreter: x <- data.frame(hat=1:10) class(rownames(x)) ## returns [1] "character" but when called from c/cpp, the rownames attribute has no class attribute, and is in fact a vector of INTSXP? > .Call("print_class_of_rownames", x, package = "test") length(x): 10

On FreeBSD 10.2, I get the following error when compiling R from the Subversion trunk (with "configure && make"): cc -shared -L/usr/local/lib -o tools.so text.o init.o Rmd5.o md5.o signals.o install.o getfmts.o http.o gramLatex.o gramRd.o mkdir ../../../../library/tools/libs installing 'sysdata.rda' Error in dyn.load(file, DLLpath = DLLpath, ...) :

Prof Brian Ripley writes: > Second, we don't have all the pertinent information such as the > configure options used and the architecture (x86_64?). I am going to > have to guess none as none were mentioned, but using --enable-R-shlib > would be pertinent. > > On 31/08/2015 05:47, Davor Cubranic wrote: >> On FreeBSD 10.2, I get the following error when compiling R

I tried compiling using GCC. First, I changed config.site to: ~/R-3.2.2$ svn diff config.site Index: config.site =================================================================== --- config.site (revision 69236) +++ config.site (working copy) @@ -278,3 +278,8 @@ ## Path to the version of pkg-config to be used for locating cairographics. ## PKGCONF = +F77=gfortran48 +FC=${F77} +CC=gcc48

Hi I'm trying to implement something similar to the following R snippet using C. I seem to have hit the wall on accessing class slots using C. library(fPortfolio) lppData <- 100 * LPP2005.RET[, 1:6] ewSpec <- portfolioSpec() nAssets <- ncol(lppData) setWeights(ewSpec) <- rep(1/nAssets, times = nAssets) ewPortfolio <- feasiblePortfolio( data = lppData, spec = ewSpec,

This Index: src/main/altrep.c =================================================================== --- src/main/altrep.c (revision 79385) +++ src/main/altrep.c (working copy) @@ -275,10 +275,11 @@ SEXP psym = ALTREP_SERIALIZED_CLASS_PKGSYM(info); SEXP class = LookupClass(csym, psym); if (class == NULL) { - SEXP pname = ScalarString(PRINTNAME(psym)); + SEXP pname =

Hi I think I have asked these questions earlier, but I been able to find answers from the documentation (which I found poorly written in several places). Will someone be kind enough to give me answers and enlighten me? (as in explain with CODE?) I want to embed R in my application and use the fPortfolio package for carrying out risk management computations. Right now I'm reading the Rmetrics

Hello Aidan, Sorry for dropping this for a while. ? Thu, 2 Mar 2023 21:03:59 +0000 "Lakshman, Aidan H" <AHL27 at pitt.edu> ?????: > //after > curnode = eval(lang3(R_Bracket2Symbol, parent->node, DEND_IND), env); lang3() always constructs a new language object. If you do end up using eval(), it may make sense to move lang3() out of the loop and reuse the existing object

Hi , I am trying to call head function from C . My doubt is with the parameter n,how to pass it . PROTECT(dfm=lang3(install("data.frame"),df,ScalarLogical(FALSE))); SET_TAG(CDDR(dfm), install("stringsAsFactors")) ; SEXP res = PROTECT(eval(dfm,R_GlobalEnv)); PROTECT(head=lang3(install("head"),res,ScalarInteger(1))); head = PROTECT(eval(head,R_GlobalEnv)); I tried

Dear R-devel, AsIs class seems to be well handled by `typeof` and `mode` function. Those two functions are being referred when explaining `is.vector` behaviour in manual. Yet `is.vector` does not seem to be handling AsIs class the same way. is.vector(1L) #[1] TRUE is.vector(I(1L)) #[1] FALSE Is there any reason behind this behaviour? Could we have it supported so AsIs class is ignored when

Dear Joris, So it does looks like the proposed function makes a lot sense then, isn't it? Cheers, Jan On 16 June 2016 at 08:37, Joris Meys <jorismeys at gmail.com> wrote: > Dear Jan, > > It is unavoidable to have OS and R dependencies for devtools. The building > process for packages is both OS and R dependent, so devtools has to be too > according to my understanding.

>>>>> Jan Gorecki writes: > So the unique.default is from the R tools package during checks. > I don't see those issues on CRAN checks. I cannot reproduce this locally (and have no clues about docker). Perhaps you can try to debug this on your end? And see what env_list is when the error occurs? Best -k > Exact environment where I am reproducing this issue is a

Hi all, Packages tools and utils have a lot of useful stuff for R developers. I find one task still not as straightforward as it could. Simply to extract dependencies of a package from DESCRIPTION file (before it is even installed to library). This would be valuable in automation of CI setup in a more meta-data driven way. The simple function below, I know it is short and simple, but having it to

Thank you Gabriel, Agree, although I think that could be relaxed in this single case and AsIs class could be ignored. Best, Jan On Sun, Mar 29, 2020 at 7:09 PM Gabriel Becker <gabembecker at gmail.com> wrote: > > Jan, > > I believe it's because it has "a non-NULL attribute other than names" as per the documentation. In this case its class of "AsIs". >

Hi R developers, On R-devel (2020-06-24 r78746) I am getting those two new exceptions during R check. I found a change which eventually may be related https://github.com/wch/r-source/commit/69de92b9fb1b7f2a7c8d1394b8d56050881a5465 I think this may be a regression. I grep'ed package manuals and R code for unique.default but don't see any. Usage section of the unique method looks fine as

Hi R-devel community, I am aware of changes in R-devel in head/tail methods but I was not expecting that to be a breaking change. # R 3.6.1 ar = array(1:27, c(3,3,3)) tail(ar, 1) #[1] 27 The current output of R-devel is something that I would expect from a tail(ar, c(1, Inf, Inf)) or tail(ar, c(1, NA, NA)) calls. Is it going to stay like this or there are plans to mitigate this breaking

Hi I seem to have run into a situation where I have more than 3 arguments to pass to a function from C. the following functions help me build an expression for evaluation: lang lang2 lang3 lang4 What should one do if there are more arguments than lang4 can handle? Regards Abhijit Bera [[alternative HTML version deleted]]