Yes, and the nice thing about doing it with immutability is you can still have recursive types to build linked lists, trees, and/or dags. From there you can bu

Yes, and the nice thing about doing it with immutability is you can still have recursive types to build linked lists, trees, and/or dags. From there you can build hash-array-mapped-tries, finger-trees, and so on, giving you friendly dict/list or JSON style data structures.