Question

is it possible to slice Array2D in F#?
say,
let tmp =Array2D.init 100 100 (fun x y -> x * 100 + y)

how to retrieve some columns or some rows from tmp like tmp.[0,1..]?

Answer 1

Yes. It’s easy to grab 2D chunks:

tmp.[10..20,30..40]

However, if you want a 1D slice, I believe you’ll need to project it out of a 2D slice

tmp.[0..0,1..] |> fun arr -> Array.init 99 (fun i -> arr.[0,i])