main :: (): int
  a := 10
  b := 20
  values := []Any{a, b}

  for values
    Assert(it.type == S64)

  Assert(*(values[0].data->*S64) == 10)
  Assert(*(values[1].data->*S64) == 20)

  // @todo: maybe this is better? Assert(*cast(*S64)values[0].data == 10)


  return 0