demo.thing

func main()
  let factorials = [factorial, otherFactorial, factorialTheThird, factorialIV, finalFactorial];
  for factorial in factorials do println("5! = " + factorial(5));
  let left = Point(3, 7), right = Point(7, 42);
  println(left'add(right)'toString());
  println(typeof left, typeof right);
  right'foo = "baz";
  println(left'foo, right'foo);
  println(for i in 0..9 do + on i);
  nil.

func factorial(n)
  if n < 2 then 1 else n * factorial(n - 1).

func otherFactorial(n)
  while n > 1 do * on n-- else 1.

func factorialTheThird(n)
  var total = 1;
  while n > 1 do total *= n--.

func factorialIV(n)
  for var i = 1; i <= n; i++ do * on i else 1.

func finalFactorial(n)
  for i in 1..n do * on i else 1.

let Point = {
  let class = Symbol("point").
  
  func [Symbol'invoke](x, y)
    {foo: "bar"} ^ {
      let [Symbol'type] = Point'class.
      
      let x = x, y = y.
      
      func add(p)
        with this do Point(x + p'x, y + p'y).
      
      func toString()
        with this do "Point(" + x + ", " + y + ")".
      
      func [Symbol'invoke]()
        with this do println(toString()).
    }.
}.

/*class Point(x, y) extends {foo: "bar"}
  
  let x = x, y = y.
  
  func add(p)
    with this do Point(x + p'x, y + p'y).
  
  func toString()
    with this do "Point(" + x + ", " + y + ")".
  
.*/

do main().