eval(readFile("Worlds_Compiled"))


alert("hello")


0.fact      = function() { return 1 }
number.fact = function() { return this * (this - 1).fact() }
5.fact()


object.printString = function() {
  return "an Object"
}
number.printString = function() {
  return "" + this
}
array.printString = function() {
  var r = ""
  for (var idx = 0; idx < this.length; idx = idx + 1) {
    if (idx > 0)
      r = r + ", "
    r = r + this[idx].printString()
  }
  return "[" + r + "]"
}


x = 5
arr = [1, 2, 3, 4]


alert(arr.printString())


alert("before: x=" + x.printString() + ", arr=" + arr.printString())
try {
  x = 42
  arr[2] = -8
  alert("during: x=" + x.printString() + ", arr=" + arr.printString())
  abort
}
else {
  alert("abort!")
}
alert("after: x=" + x.printString() + ", arr=" + arr.printString())


in new world {
  number.printString = function() { return "X" }
  alert(arr.printString())
}

alert(arr.printString())


w1 = new world
in w1 {
  arr[0] = 666
}

w2 = new world
in w2 {
  arr[0] = 333
}

w1.get(arr, 0)
w2.get(arr, 0)

in w1 { alert(arr.printString()) }
in w2 { alert(arr.printString()) }
alert(arr.printString())

w1.commit()
arr.printString()