paracord

A fast, simple, multi-threaded string interning library.

lib.rs:

ParaCord is a lightweight, thread-safe, memory efficient string interer.

When calling ParaCord::get_or_intern, a [Key] is returned. This [Key] is guaranteed to be unique if the input string is unique, and is guaranteed to be the same if the input string is the same. [Key] is 32bits, and has a niche value which allows Option<Key> to also be 32bits.

If you don't want to intern the string, but check for it's existence, you can use ParaCord::get, which returns None if not present.

[Key]s can be exchanged back into strings using ParaCord::resolve. It's important to keep in mind that this might panic or return nonsense results if given a key returned by some other ParaCord instance.

This string interner is not garbage collected, so strings that are allocated in the interner are not released until the ParaCord instance is dropped.