R Under development (unstable) (2025-06-05 r88281 ucrt) -- "Unsuffered Consequences"
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Platform: x86_64-w64-mingw32/x64

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> source("incl/start.R")
Loading required package: parallelly
Loading required package: future
> 
> message("*** Utility functions ...")
*** Utility functions ...
> 
> message("- is_na() ...")
- is_na() ...
> stopifnot(is_na(NA), !is_na(TRUE), !is_na(FALSE), !is_na(1),
+           !is_na(NULL), !is_na(1:2), !is_na(rep(NA, times = 3)),
+           !is_na(rep(TRUE, 3)), !is_na(letters))
> 
> message("- is_false() ...")
- is_false() ...
> stopifnot(is_false(FALSE), !is_false(TRUE), !is_false(NA), !is_false(1),
+           !is_false(NULL), !is_false(1:2), !is_false(rep(FALSE, times = 3)),
+           !is_false(rep(TRUE, times = 3)), !is_false(letters))
> 
> message("- attached_packages() ...")
- attached_packages() ...
> print(attached_packages())
 [1] "future.batchtools" "future"            "parallelly"       
 [4] "stats"             "graphics"          "grDevices"        
 [7] "utils"             "datasets"          "methods"          
[10] "base"             
> 
> 
> message("- hpaste() & printf() ...")
- hpaste() & printf() ...
> # Some vectors
> x <- 1:6
> y <- 10:1
> z <- LETTERS[x]
> 
> # - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> # Abbreviation of output vector
> # - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> printf("x = %s.\n", hpaste(x))
x = 1, 2, 3, ..., 6.
> ## x = 1, 2, 3, ..., 6.
> 
> printf("x = %s.\n", hpaste(x, max_head = 2))
x = 1, 2, ..., 6.
> ## x = 1, 2, ..., 6.
> 
> printf("x = %s.\n", hpaste(x, max_head = 3)) # Default
x = 1, 2, 3, ..., 6.
> ## x = 1, 2, 3, ..., 6.
> 
> # It will never output 1, 2, 3, 4, ..., 6
> printf("x = %s.\n", hpaste(x, max_head = 4))
x = 1, 2, 3, 4, 5, 6.
> ## x = 1, 2, 3, 4, 5 and 6.
> 
> # Showing the tail
> printf("x = %s.\n", hpaste(x, max_head = 1, max_tail = 2))
x = 1, ..., 5, 6.
> ## x = 1, ..., 5, 6.
> 
> # Turning off abbreviation
> printf("y = %s.\n", hpaste(y, max_head = Inf))
y = 10, 9, 8, 7, 6, 5, 4, 3, 2, 1.
> ## y = 10, 9, 8, 7, 6, 5, 4, 3, 2, 1
> 
> ## ...or simply
> printf("y = %s.\n", paste(y, collapse = ", "))
y = 10, 9, 8, 7, 6, 5, 4, 3, 2, 1.
> ## y = 10, 9, 8, 7, 6, 5, 4, 3, 2, 1
> 
> # Adding a special separator before the last element
> # Change last separator
> printf("x = %s.\n", hpaste(x, last_collapse = " and "))
x = 1, 2, 3, 4, 5 and 6.
> ## x = 1, 2, 3, 4, 5 and 6.
> 
> message("- mcat(), mprintf(), mprint() and mstr() ...")
- mcat(), mprintf(), mprint() and mstr() ...
> mcat("Hello world!\n")
Hello world!
> mprintf("Hello %s!\n", "world")
Hello world!
> mprint("Hello world!")
[04:39:59.803] [1] "Hello world!"
> mstr("Hello world!")
[04:39:59.805]  chr "Hello world!"
> 
> message("- trim() ...")
- trim() ...
> mprint(trim(" hello "))
[04:39:59.809] [1] "hello"
> stopifnot(trim(" hello ") == "hello")
> 
> 
> # - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> # is_os()
> # - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> message("- is_os() ...")
- is_os() ...
> for (os in c("darwin", "freebsd", "irix", "linux", "openbsd",
+              "solaris", "windows")) {
+   mprintf("is_os('%s') = %s", os, is_os(os))
+ }
is_os('darwin') = FALSEis_os('freebsd') = FALSEis_os('irix') = FALSEis_os('linux') = FALSEis_os('openbsd') = FALSEis_os('solaris') = FALSEis_os('windows') = TRUE> 
> 
> # - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> # import_future()
> # - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> message("*** import_future() ...")
*** import_future() ...
> 
> future <- import_future("future")
> stopifnot(identical(future, future::future))
> 
> future <- import_future("<unknown function>", default = future::future)
> stopifnot(identical(future, future::future))
> 
> res <- try(import_future("<unknown function>"), silent = TRUE)
> stopifnot(inherits(res, "try-error"))
> 
> message("*** import_future() ... DONE")
*** import_future() ... DONE
> 
> message("*** Utility functions ... DONE")
*** Utility functions ... DONE
> 
> source("incl/end.R")
> 
> proc.time()
   user  system elapsed 
   0.87    0.31    1.12