How can I refer to a specific member of a Tuple of any size in F#

Question

okay, this might be a silly question.

So I have some tuples of size 4 so like (int,int,int,int)

If it were a 2 tuple I could use fst(myTuple) to refer to th

Answer 1

For the sheer novelty, here's an overloaded operator that works for tuples of any* size.

let (@) t idx =
    match t.GetType().GetProperty(sprintf "Item%d" idx) with
    | null -> invalidArg "idx" "invalid index"
    | p -> p.GetValue(t, null) |> unbox

//Usage
let t = 4, 5, 6
let n1 : int = t@1 //4
let i = 2
let n2 = t@i //5

* Any, in this context, has a more limited meaning, specifically, up to 7.