R Under development (unstable) (2025-07-11 r88405 ucrt) -- "Unsuffered Consequences"
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> library(dclone)
Loading required package: coda
Loading required package: parallel
Loading required package: Matrix
dclone 2.3-3 	 2025-07-12
> 
> x <- 1
> x1 <- dclone(x, 1)
> x2 <- dclone(x, 2)
> stopifnot(length(x1) == length(x))
> stopifnot(length(x2) == length(x)*2)
> 
> x <- 1:2
> x1 <- dclone(x, 1)
> x2 <- dclone(x, 2)
> stopifnot(length(x1) == length(x))
> stopifnot(length(x2) == length(x)*2)
> 
> x <- matrix(1:6, 2, 3)
> x1 <- dclone(x, 1)
> x2 <- dclone(x, 2)
> stopifnot(all(dim(x1) == dim(x)))
> stopifnot(all(dim(x2) == dim(x)*c(2,1)))
> 
> x <- dctr(matrix(1:6, 2, 3))
> x1 <- dclone(x, 1)
> x2 <- dclone(x, 2)
> stopifnot(all(dim(x1) == dim(x)))
> stopifnot(all(dim(x2) == dim(x)*c(1,2)))
> 
> x <- dciid(data.frame(a=1:3, b=4:6))
> x1 <- dclone(x, 1)
> x2 <- dclone(x, 2)
> stopifnot(all(dim(x1) == dim(x)))
> stopifnot(all(dim(x2) == dim(x)*c(2,1)))
> 
> ## array
> x <- dcdim(array(1:6, c(2, 3, 1)))
> x1 <- dclone(x, 1)
> x2 <- dclone(x, 2)
> x
, , 1

     [,1] [,2] [,3]
[1,]    1    3    5
[2,]    2    4    6

attr(,"drop")
[1] TRUE
attr(,"class")
[1] "dcdim" "array"
> x1
, , 1

     [,1] [,2] [,3]
[1,]    1    3    5
[2,]    2    4    6

attr(,"drop")
[1] TRUE
attr(,"class")
[1] "dcdim" "array"
> x2
, , clone.1

     [,1] [,2] [,3]
[1,]    1    3    5
[2,]    2    4    6

, , clone.2

     [,1] [,2] [,3]
[1,]    1    3    5
[2,]    2    4    6

attr(,"n.clones")
[1] 2
attr(,"n.clones")attr(,"method")
[1] "dim"
attr(,"n.clones")attr(,"method")attr(,"drop")
[1] TRUE
> stopifnot(all(dim(x1) == dim(x)))
> stopifnot(all(dim(x2) == dim(x)*c(1,1,2)))
> 
> x <- dcdim(array(1:6, c(1, 2, 3)), perm = 1)
> x1 <- dclone(x, 1)
> x2 <- dclone(x, 2)
> x
, , 1

     [,1] [,2]
[1,]    1    2

, , 2

     [,1] [,2]
[1,]    3    4

, , 3

     [,1] [,2]
[1,]    5    6

attr(,"perm")
[1] 1
attr(,"drop")
[1] TRUE
attr(,"class")
[1] "dcdim" "array"
> x1
, , 1

     [,1] [,2]
[1,]    1    2

, , 2

     [,1] [,2]
[1,]    3    4

, , 3

     [,1] [,2]
[1,]    5    6

attr(,"perm")
[1] 1
attr(,"drop")
[1] TRUE
attr(,"class")
[1] "dcdim" "array"
> x2
, , 1

        [,1] [,2]
clone.1    1    2
clone.2    1    2

, , 2

        [,1] [,2]
clone.1    3    4
clone.2    3    4

, , 3

        [,1] [,2]
clone.1    5    6
clone.2    5    6

attr(,"n.clones")
[1] 2
attr(,"n.clones")attr(,"method")
[1] "dim"
attr(,"n.clones")attr(,"method")attr(,"drop")
[1] TRUE
attr(,"n.clones")attr(,"method")attr(,"perm")
[1] 1
> stopifnot(all(dim(x1) == dim(x)))
> stopifnot(all(dim(x2) == dim(x)*c(2,1,1)))
> 
> 
> x <- dcdim(array(1:6, c(2, 1, 3)), perm = 2)
> x1 <- dclone(x, 1)
> x2 <- dclone(x, 2)
> x
, , 1

     [,1]
[1,]    1
[2,]    2

, , 2

     [,1]
[1,]    3
[2,]    4

, , 3

     [,1]
[1,]    5
[2,]    6

attr(,"perm")
[1] 2
attr(,"drop")
[1] TRUE
attr(,"class")
[1] "dcdim" "array"
> x1
, , 1

     [,1]
[1,]    1
[2,]    2

, , 2

     [,1]
[1,]    3
[2,]    4

, , 3

     [,1]
[1,]    5
[2,]    6

attr(,"perm")
[1] 2
attr(,"drop")
[1] TRUE
attr(,"class")
[1] "dcdim" "array"
> x2
, , 1

     clone.1 clone.2
[1,]       1       1
[2,]       2       2

, , 2

     clone.1 clone.2
[1,]       3       3
[2,]       4       4

, , 3

     clone.1 clone.2
[1,]       5       5
[2,]       6       6

attr(,"n.clones")
[1] 2
attr(,"n.clones")attr(,"method")
[1] "dim"
attr(,"n.clones")attr(,"method")attr(,"drop")
[1] TRUE
attr(,"n.clones")attr(,"method")attr(,"perm")
[1] 2
> stopifnot(all(dim(x1) == dim(x)))
> stopifnot(all(dim(x2) == dim(x)*c(1,2,1)))
> 
> ## matrix
> x <- dcdim(matrix(1:6, 2, 3))
> x1 <- dclone(x, 1)
> x2 <- dclone(x, 2)
> x
     [,1] [,2] [,3]
[1,]    1    3    5
[2,]    2    4    6
attr(,"drop")
[1] TRUE
attr(,"class")
[1] "dcdim"  "matrix" "array" 
> x1
     [,1] [,2] [,3]
[1,]    1    3    5
[2,]    2    4    6
attr(,"drop")
[1] TRUE
attr(,"class")
[1] "dcdim"  "matrix" "array" 
> x2
, , clone.1

     [,1] [,2] [,3]
[1,]    1    3    5
[2,]    2    4    6

, , clone.2

     [,1] [,2] [,3]
[1,]    1    3    5
[2,]    2    4    6

attr(,"n.clones")
[1] 2
attr(,"n.clones")attr(,"method")
[1] "dim"
attr(,"n.clones")attr(,"method")attr(,"drop")
[1] TRUE
> # stopifnot(all(dim(x1) == dim(x)))
> # stopifnot(all(dim(x2) == dim(x)*c(1,2)))
> 
> 
> proc.time()
   user  system elapsed 
   5.26    0.25    5.50