Returning arrays of different dimensions from one function; is it possible in F#?

Question

I am trying to convert some Python to F#, specifically numpy.random.randn.

The function takes a variable number of int arguments and returns arrays of different dim

Answer 1

Although Tomas' suggestion to use overloading is probably best, .NET arrays do share a common sub-type: System.Array. So what you want is possible.

member self.differntarrays ([] dimensions: Object[]) : Array =
    match dimensions with
    | [| dim1 |] ->      
         [| 
            1 
         |] :> _
    | [| dim1; dim2 |] -> 
        [|
           [| 2 |], 
           [| 3 |] 
        |] :> _
    | _ -> failwith "error"