R Under development (unstable) (2024-07-02 r86866 ucrt) -- "Unsuffered Consequences"
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> ## This requires mirai (>= 0.13.2)
> if (packageVersion("mirai") >= "0.13.2") {
+ library(future.mirai)
+ 
+ mirai::daemons(1, dispatcher = FALSE)
+ plan(mirai_cluster)
+ 
+ g <- function() 42
+ h <- function() g()
+ 
+ f <- future(h())
+ v <- value(f)
+ print(v)
+ stopifnot(v == h())
+ 
+ plan(sequential)
+ mirai::daemons(0)  ## Reset any daemons running
+ gc()
+ 
+ }
Loading required package: future
[1] 42
         used (Mb) gc trigger (Mb) max used (Mb)
Ncells 457201 24.5     989634 52.9   633308 33.9
Vcells 825125  6.3    8388608 64.0  2033369 15.6
> 
> proc.time()
   user  system elapsed 
   0.21    0.14    0.59