# I have a question about `ref`s. If I'm missing something in the documentation, I
# would appreciate a pointer, but I couldn't find how to make a `ref` point to an
# already existing (heap?) primitive. I tried as follows:

var
  a: ref int # I want this to point at b
  b: int = 3

# a = b.addr # Doesn't work
# a[] = b # Doesn't work
# a = ref b # Doesn't work

# How can I make a primitive like an `int` and have a ref that points to it? Or is
# this impossible?