If I have loaded the C code:
SEXP altrep_STRING_IS_SORTED(SEXP x)
{
return ScalarInteger(STRING_IS_SORTED(x));
}
and defined the function:
issort <- function(x) .Call("altrep_STRING_IS_SORTED",x)
I am seeing the following results in R 3.5.1/Linux:
> issort(LETTERS)
I ran into an interesting error unserializing a file created with
ascii=TRUE:
R 3.5.1 (Windows or Linux):
> unserialize(serialize(list(raw=as.raw(c(39,41))), NULL, version=2,
ascii=TRUE))
Error in unserialize(serialize(list(raw = as.raw(c(39, 41))), NULL,
version = 2, :
ReadItem: un
Experimenting with altrep objects and v3 serialization, I discovered a
possible bug. Calling DATAPTR on a compact_intseq object returns a
pointer to the expanded integer sequence in memory. If you modify
this data, the object values appear to be changed. However, if the
compact_intseq object is
I am not able to #include "R_ext/Altrep.h" from a C++ file. I think
it needs two changes:
1. add the same __cplusplus check as most of the other header files:
#ifdef __cplusplus
extern "C" {
#endif
...
#ifdef __cplusplus
}
#endif
2. change the line
R_new_alt
While implementing R's new 'altrep' functionality in the TERR engine,
I discovered a bug in R's 'deferred_string' altrep object: it is not
using the correct value of the 'OutDec' option when it expands a
deferred_string. See the following example:
R 3.5.1: (same results in R 3.6.0 devel engine bu
