How can i convert between F# List and F# Tuple?

Question

Is there some way to convert between F# List and F# Tuple?

For example:

[1;2;3] -> (1,2,3)    
(1,2,3,4) -> [1;2;3;4]

I need

Answer 1

Making use of the PropertyInfo structure one can build a list recursively. A problem with this approach is that the type information is lost and the result is produced as a list of obj. Nevertheless, this does solve the tuple to list portion of the question.

let tupleToList tpl = 
    let rec loop tpl counter acc =
        let getItemPropertyInfo t n = t.GetType().GetProperty(sprintf "Item%d" n)
        let getItem t n = (getItemPropertyInfo t n).GetValue(t,null)
        match counter with
        | 8 -> 
            match tpl.GetType().GetProperty("Rest") with
            | null -> acc
            | _ as r ->
                let rest = r.GetValue(tpl,null)
                loop rest 2 ((getItem rest 1) :: acc)
        | _ as n -> 
            match getItemPropertyInfo tpl n with
            | null -> acc
            | _ as item -> loop tpl (counter+1) (item.GetValue(tpl,null) :: acc)
    loop tpl 1 [] |> List.rev