Function to combine nested arrays into multidimensional array

[ludwigwinkler]

Hi,

is technically feasible to add a function to combine an arbitrary combination of nested, arrays into a single multidimensional array?

Something akin to
data = [ [ones(13,14) for i in 1:12] for j in 1:11] -> combine to array of size (11, 12, 13, 14).

[fredrikekre]

xref #21672, #27188, #31636

[mcabbott]

Also on discourse, where I pushed LazyStack.jl as a package for this.

It also tries to cover reductions of generators, for which I now see #31644 too.

[ludwigwinkler]

Closing since we migrated to gitlab