Re:Programming R at native speed using Haskell
by mboes on Wednesday September 09, 2015 @07:49AM
(#10190848)
Yes - the R GC manages R objects allocated by the R interpreter, and conversely the Haskell GC manages Haskell objects allocated by the Haskell runtime.
https://tweag.github.io/HaskellR/docs/memory-allocation.html
Both these links have more information on this.
As far as I can tell (and most of this is way over my head) the native R garbage collection is used