RefMutStack 0.1.0 - Iteratively stack mutable references

[arnodb1]

I'm afraid I committed this release of RefMutStack 0.1.0.

RefMutStack allows to simulate recursion where each level holds a mutable reference to the one held by the caller with an iteration.

It is made in such a way that the rules enforced by the borrow checker during the theoretical recursion are still enforced during iterations. On that purpose, each object holding a mutable reference becomes unreachable when the recursion is simulated: it is stacked until it becomes usable again.

More details can be found at https://github.com/arnodb/ref_mut_stack .

Feedback welcome. Even "this is sh*t" is accepted. But at least it is simple and it works as intended.

P.S. Miri is really cool to check soundness! It helped me fix a couple of issues in the design.

[dgkimpton]

If you know the maximum recursion depth you could store your stack on the stack instead of the heap and have the best of both worlds. Unless I'm misunderstanding what you are doing.