F #: creating collection of integers from user input

I'm new to F #, so the question might be pretty basic. However, I couldn't find any suggestions on SO.

I am playing with an algorithmic problem in F #. As a first step, I want to create a collection of integers from user console input. The number of entries is undefined. And I don't want to use any loops while

. I would prefer as much of the idiomatic approach as possible.

In a recursive function, I read the result and parse it with Int32.TryParse

. I am matching the bool result with match ... with

. If successful, I add the new value to the collection. Otherwise, I return the collection.

Below is my code:

let rec getNumList listSoFar =
    let ok, num = Int32.TryParse(Console.ReadLine())
    match ok with
        | false -> listSoFar
        | true -> getNumList num::listSoFar

let l = getNumList []

      

        
        
        
      

    

And the error I am getting:

Type mismatch. Waiting for '
    but given' list

I know I am using types incorrectly, although I do not understand what exactly is wrong. Any explanation is much appreciated.