Automatic flattening on outer array structures

[zxm403089989]

Similar as the example StackViews.jl example on repeated array. Suppose we have a 2-dimensional nested array A:

julia> using StackViews
julia> A = rand(100, 100);
julia> n = 100;
julia> StackView([A for _ in 1:n,_ in 1:n])
(100, 100, 10000)

We can see that StackView ignores the for loop structure, and flatten outer layer into a vector automatically. In principal, it should be an array with size (100,100,100,100). Is there anyway that we can persevere array size in StackView?

[melonedo]

It seems that this packages is built on top of the assumption that the outer dimensions are only one dimensional, as the definition of StackView is

StackViews.jl/src/StackViews.jl

Line 75 in c2f658a

struct StackView{T, N, D, A} <: AbstractArray{T, N}

Where N is the total number of indices (1 + that of the inner array) and D indicates its position.

So it would require quite a bit of type parameter manipulation to allow for multiple outer dimensions.