RFC: Intent to Ship React 18(github.com)

    it = ["hello", "world", "foo", "bar"]

    shouldbehello = next(it)
    shouldbeworld = next(it)

    if sometimes_true_sometimes_false:
       shouldbefoo = next(it)

    # if the conditional is false this will be foo, oops.
    shouldbebar = next(it)

    def react_to_stuff(func, var):
       orig = var.copy()

       def monitor():
          while True:
              sleep 2
              if var != orig:
                  orig = var.copy()
                  func(var)

       t = Thread(target=monitor)
       t.start()

     stuff = "Hello"
     react_to_stuff(lambda x: print(x), stuff)