[Rd] lapply and vapply Primitive Documentation
Martin Morgan
mtmorg@n@b|oc @end|ng |rom gm@||@com
Fri Jul 10 10:16:37 CEST 2020
Was hoping for an almost record old bug fix (older than some R users!), but apparently the documentation bug is only a decade old (maybe only older than some precious R users)
https://github.com/wch/r-source/blame/2118f1d0ff70c1ebd06148b6cb7659efe5ff4d99/src/library/base/man/lapply.Rd#L116
(I don't see lapply / vapply referenced as primitive in the original text changed by the commit).
Martin Morgan
On 7/10/20, 3:52 AM, "R-devel on behalf of Martin Maechler" <r-devel-bounces using r-project.org on behalf of maechler using stat.math.ethz.ch> wrote:
>>>>> Cole Miller
>>>>> on Thu, 9 Jul 2020 20:38:10 -0400 writes:
> The documentation of ?lapply includes:
>> lapply and vapply are primitive functions.
> However, both evaluate to FALSE in `is.primitive()`:
> is.primitive(vapply) #FALSE
> is.primitive(lapply) #FALSE
> It appears that they are not primitives and that the
> documentation might be outdated. Thank you for your time
> and work.
Thank you, Cole.
Indeed, they were primitive originally (but e.g. lapply() seems
to have become .Internal with
r7885 | ripley | 2000-01-31 08:58:59 +0100
i.e. about 4 weeks *before* release of R 1.0.0
Changes made to both 'R-devel' and 'R-patched'.
Martin
> Cole Miller
> P.S. During research, my favorite `help()` is
> `?.Internal()`: "Only true R wizards should even consider
> using this function..." Thanks again!
;-)
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