Array Shadow

The Array Shadow object is a "shadow" of an vector or array x:
It has the same (dim)names as x, and pretends to have the same length and dimensions.
But it holds no actual data.

Usage

cast_ArrayShadow(type, length, dim, names, dimnames, comment, oldClass)

cast_ArrayShadow2(x_expr, env)

Arguments

type

the type of the vector/array (see atomic and list).

length

the length of the vector/array.

dim

the dimensions of the vector/array.

names

the names of the vector/array.

dimnames

the dimnames of the vector/array.

comment

the comment attribute of the vector/array.

oldClass

the class attribute of the vector/array.

x_expr

the substituted name of the vector/array.

env

the environment where the vector/array name (x_expr) actually lives.

Value

The "shadow" of the vector/array.

Examples

x <- array(1:27, c(3,3,3))
cast_ArrayShadow(typeof(x), length(x), dim(x), names(x), dimnames(x), oldClass(x))
#> [1] 0
#> attr(,"shadow_len")
#> [1] 27
#> attr(,"shadow_dim")
#> [1] 3 3 3
#> attr(,"class")
#> [1] "ArrayShadow"