R Under development (unstable) (2024-01-23 r85822 ucrt) -- "Unsuffered Consequences"
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> source("incl/start.R")
Loading required package: R.oo
Loading required package: R.methodsS3
R.methodsS3 v1.8.2 (2022-06-13 22:00:14 UTC) successfully loaded. See ?R.methodsS3 for help.
R.oo v1.26.0 successfully loaded. See ?R.oo for help.

Attaching package: 'R.oo'

The following object is masked from 'package:R.methodsS3':

    throw

The following objects are masked from 'package:methods':

    getClasses, getMethods

The following objects are masked from 'package:base':

    attach, detach, load, save

R.filesets v2.15.1 successfully loaded. See ?R.filesets for help.

Attaching package: 'R.filesets'

The following objects are masked from 'package:base':

    append, readLines

> 
> message("*** RDataFileSet")
*** RDataFileSet
> 
> x <- list(a=1, b=2)
> y <- letters[1:10]
> z <- NULL
> 
> save(x, file="x.RData")
> save(y, file="y.RData")
> save(z, file="z.RData")
> 
> ds <- RDataFileSet$byPath(".")
> print(ds)
RDataFileSet:
Name: .
Tags: 
Full name: .
Number of files: 3
Names: x, y, z [3]
Path (to the first file): .
Total file size: 258 B (258 bytes)
> 
> x2 <- loadObject(ds[["x"]])
> stopifnot(identical(x2, x))
> 
> res <- loadObject(ds[["x"]], drop=FALSE)
> stopifnot(identical(res$x, x))
> 
> y2 <- loadObject(ds[["y"]])
> stopifnot(identical(y2, y))
> 
> z2 <- loadObject(ds[["z"]])
> stopifnot(is.null(z2))
> 
> env <- loadToEnv(ds[["x"]])
> stopifnot(identical(env$x, x))
> 
> message("*** RDataFileSet ... DONE")
*** RDataFileSet ... DONE
> 
> source("incl/end.R")
> 
> proc.time()
   user  system elapsed 
   0.37    0.07    0.45