panoradix

My take on implementing a Radix tree, for usage when large data mappings with strings as indices.

Note: this is currently a work in progress, expect unannounced brutal API changes every time the version is bumped.

What's in this repo?

• RadixMap, a key-value map where the key is necessarily a string.
• RadixSet, a set of strings.

Both are backed by a Radix tree.

What's being worked on?

A lot is missing right now, here's a wishlist sorted by difficulty/want:

• [ ] map iterators: values_mut()
• [ ] faster edge search: currently linear, should probably be binary search
• [ ] erasing a key: should be straightforward
• [ ] intersection: should be straightforward
• [ ] union: since there can't be multiple values, merging two values with the same key should be annoying
• [ ] take arbitrary keys instead of strings: had a go trying to implement this early on, but the API transparency between &str and String is so damn gorgeous that I've postponed this indefinitely

What's just been finished?

• [x] set iterators: keys()
• [x] map iterators: keys(), values()