>>>>> Will L
>>>>> on Fri, 6 Dec 2019 16:02:59 -0500 writes:
> All, At first glance, a recent commit to R-devel (
>
https://github.com/wch/r-source/commit/2c182014ecc8c2407a89092c9162d86046bd18da)
> appears to be related to long vector support.
yes, for a very limited case, with a very nice minimal
reproducible example and proper R bug report, where the change
was very simple indeed , PR#17665, i.e.
https://bugs.r-project.org/bugzilla/show_bug.cgi?id=17665
> But as
> Henrik Bengtsson points out at
>
https://github.com/HenrikBengtsson/Wishlist-for-R/issues/97#issuecomment-562659134,
> writeBin() still prohibits long vectors. Are there any
> plans to add long vector support to R 4.0.0?
well.. there *is* a lot of long vector support in R 3.x.y
already.
Where there are gaps,
1) we have to be told about (i.e. it should be a case where
people at least have stumbled about it) -- preferably with
form PR in R's bugzilla, see https://www.r-project.org/bugs.html
2) sometimes a fix takes quite a bit of time, and we would close
the case much more quickly if people looked at the case in
detail and found *how* to fix it.
[For the Matrix package and the case of sparse matrices,
I'd be very happy if a C-savvy R developer would start
collaborating with me to get this (incl interface to SuiteSparse)]
In the present case, it may be that a change does not take much
effort; my first try seems to work already .. and may just a bit
more safeguarding ..
So thank you, Will, for the reminder!
Martin Maechler
ETH Zurich and R Core Team
> x <- raw(2^31)
> writeBin(x, con = nullfile())
> # Error in writeBin(x, con = nullfile()) :
> # long vectors not supported yet: connections.c:4430
> x <- raw(2^31)
> con <- rawConnection(raw(0L), "w")
> writeBin(raw(2^31), con = con)
> # Error in writeBin(raw(2^31), con = con) :
> # long vectors not supported yet: connections.c:4430
> Will
> [[alternative HTML version deleted]]
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