(* Features of F# to talk about *)

open System;

Console.WriteLine("hello");;  // .net interop

// binding to vars:

let x = 1;   // immutable
let f y = x+1 // function def

// note type inference

let g() =
  let x = 2
  Console.WriteLine((f 10));

g();;   // 11 if statically scoped.