Trying to make my Rust library `composable-indexes` more ergonomic. It is for indexing a collection on multiple dimensions in a type-safe and composable manner.

In other words, something safer & more concise than maintaining multiple HashMap's, but a lot less involved & simpler than an in-memory SQLite.

It's better explained by the example here: https://github.com/utdemir/composable-indexes/blob/3baa36762....

https://github.com/utdemir/composable-indexes