search for: getlistelement

...sh (``Rgui has generated errors and will be closed by Windows''): void init(SEXP rho, int *o){ SEXP vars = findVar(install("vars"), R_GlobalEnv); } This also crashes: void init(SEXP rho, int *o){ SEXP vars = findVar(install("vars"), rho); *o = INTEGER(getListElement(vars,"delta"))[0]; } (where GetListElement is that function from the R help) Further, if I source dyn.load("c_fns.dll") twice, R starts churning away, taking up 100% of the CPU to do nothing, until I pull up the task manager and kill R. This happens whether I've called dyn...

..._NamesSymbol); int i; Rprintf("List is of length:%d\n",length(list)); for (i = 0; i < length(list); i++) Rprintf("name of id:%d\t%s\n",i,CHAR(STRING_ELT(names, i))); } ----------------------- This is basicly just a copy of ----------------------- static SEXP getListElement(SEXP list, char *str) { SEXP elmt = R_NilValue, names = getAttrib(list, R_NamesSymbol); int i; for (i = 0; i < length(list); i++) if (strcmp(CHAR(STRING_ELT(names, i)), str) == 0) { elmt = VECTOR_ELT(list, i); break; } return elmt; } ----------------------- But this...

...arking). What exactly is as.altrep doing? Best, ~G On Tue, Jul 23, 2019 at 9:54 AM Michael Lawrence via R-devel < r-devel at r-project.org> wrote: > Hi Kylie, > > As an alternative in the short term, you could consider deriving from > S4Vector's List class, implementing the getListElement() method to > lazily create the objects. > > Michael > > On Tue, Jul 23, 2019 at 9:09 AM Bemis, Kylie <k.bemis at northeastern.edu> > wrote: > > > > Hello, > > > > I was wondering if there were any plans for ALTREP lists (VECSXP)? > > > >...

...Tue, Jul 23, 2019 at 9:54 AM Michael Lawrence via R-devel < > > r-devel at r-project.org> wrote: > > > >> Hi Kylie, > >> > >> As an alternative in the short term, you could consider deriving from > >> S4Vector's List class, implementing the getListElement() method to > >> lazily create the objects. > >> > >> Michael > >> > >> On Tue, Jul 23, 2019 at 9:09 AM Bemis, Kylie <k.bemis at northeastern.edu> > >> wrote: > >>> > >>> Hello, > >>> > >>> I...

Hi Kylie, As an alternative in the short term, you could consider deriving from S4Vector's List class, implementing the getListElement() method to lazily create the objects. Michael On Tue, Jul 23, 2019 at 9:09 AM Bemis, Kylie <k.bemis at northeastern.edu> wrote: > > Hello, > > I was wondering if there were any plans for ALTREP lists (VECSXP)? > > It seems to me that they could be supported in a similar w...

Hello, I was wondering if there were any plans for ALTREP lists (VECSXP)? It seems to me that they could be supported in a similar way to how ALTSTRING works, with Elt() and Set_elt() methods, or would there be some problems with that I?m not seeing due to lists not being atomic vectors? I was taking an approach of converting each list element (of a file-based list data structure) to an ALTREP

Hello, Quick question. I have written a C function - I would like to make it return two vectors to the R environment - one STRSXP vector, and one INTSXP vector. Is this possible/ easy to do using the API? I looked, but could not find the answer to this question in the "Writing R Extensions" guide. Thanks very much for your help! Charles [[alternative HTML version deleted]]

...gt; Best, > ~G > > On Tue, Jul 23, 2019 at 9:54 AM Michael Lawrence via R-devel < > r-devel at r-project.org> wrote: > >> Hi Kylie, >> >> As an alternative in the short term, you could consider deriving from >> S4Vector's List class, implementing the getListElement() method to >> lazily create the objects. >> >> Michael >> >> On Tue, Jul 23, 2019 at 9:09 AM Bemis, Kylie <k.bemis at northeastern.edu> >> wrote: >>> >>> Hello, >>> >>> I was wondering if there were any plans for ALTREP...