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 two Functions to do that:

let listToTuple list = ... let tupleToList tuple = ... 

Thank you in advance.

Answer 1

Besides listToTuple then pblasucci has the right answer. But you wont be happy with the result unless you know something about type types involved, or if you wan't to do a lot of boxing and unboxing.

let tupleToList t =      if Microsoft.FSharp.Reflection.FSharpType.IsTuple(t.GetType())          then Some (Microsoft.FSharp.Reflection.FSharpValue.GetTupleFields t |> Array.toList)         else None  let listToTuple l =     let l' = List.toArray l     let types = l' |> Array.map (fun o -> o.GetType())     let tupleType = Microsoft.FSharp.Reflection.FSharpType.MakeTupleType types     Microsoft.FSharp.Reflection.FSharpValue.MakeTuple (l' , tupleType)