R Under development (unstable) (2024-07-17 r86903 ucrt) -- "Unsuffered Consequences"
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> suppressWarnings(RNGversion("3.5.2"))
> 
> library("partykit")
Loading required package: grid
Loading required package: libcoin
Loading required package: mvtnorm
> set.seed(1)
> 
> mysplit <- function(x) partysplit(1L, breaks = as.double(x))
> x <- vector(mode = "list", length = 5)
> x[[1]] <- list(id = 1L, split = mysplit(1 / 3), kids = 2:3, info = "one")
> x[[2]] <- list(id = 2L, info = "two")
> x[[3]] <- list(id = 3L, split = mysplit(2 / 3), kids = 4:5, info = "three")
> x[[4]] <- list(id = 4L, info = "four")
> x[[5]] <- list(id = 5L, info = "five")
> 
> rx <- as.partynode(x)
> stopifnot(identical(as.list(rx), x))
> 
> dat <- data.frame(x = runif(100))
> kidids_node(rx, dat)
  [1] 1 2 2 2 1 2 2 2 2 1 1 1 2 2 2 2 2 2 2 2 2 1 2 1 1 2 1 2 2 2 2 2 2 1 2 2 2
 [38] 1 2 2 2 2 2 2 2 2 1 2 2 2 2 2 2 1 1 1 1 2 2 2 2 1 2 1 2 1 2 2 1 2 2 2 2 2
 [75] 2 2 2 2 2 2 2 2 2 1 2 1 2 1 1 1 1 1 2 2 2 2 2 2 2 2
> 
> proc.time()
   user  system elapsed 
   1.45    0.18    1.62