R Under development (unstable) (2025-05-01 r88184 ucrt) -- "Unsuffered Consequences"
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Platform: x86_64-w64-mingw32/x64

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> library("R.cache")
R.cache v0.17.0 successfully loaded. See ?R.cache for help.
> 
> # Use an empty temporary file cache
> setCacheRootPath(path=file.path(tempdir()))
> clearCache(recursive=TRUE, prompt=FALSE)
> dirs <- c("tests", "memoizedCall")
> 
> # - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> # Define function to be memoized
> # - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> sleep <- function(time) {
+   cat(sprintf("Sleeping for %g seconds...\n", time))
+   Sys.sleep(time)
+   cat(sprintf("Sleeping for %g seconds...done\n", time))
+   time
+ }
> 
> # - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> # Test memoization
> # - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> # There will be no cache hit for the first call
> t0 <- system.time({
+   res0 <- memoizedCall(sleep, time=1.5, dirs=dirs)
+ })[3]
Sleeping for 1.5 seconds...
Sleeping for 1.5 seconds...done
> print(t0)
elapsed 
   1.55 
> 
> # The second will have a cache hit and therefore
> # return the memoized results momentarily.
> t1 <- system.time({
+   res1 <- memoizedCall(sleep, time=1.5, dirs=dirs)
+ })[3]
> print(t1)
elapsed 
   0.24 
> if (t1 >= t0) {
+   warning("Second call to memoizedCall() took longer than the first: ",
+           t1, " >= ", t0)
+ }
> 
> # Sanity check
> stopifnot(identical(res1, res0))
> clearCache(recursive=TRUE)
> 
> proc.time()
   user  system elapsed 
   0.25    0.06    4.07