- nibble
- latest release: 0.1.0, 2017-10-30 (as of 2020-10-09) (also the only release)
- license: CC0-1.0
- doesn't build on stable (clarfonthey/nibble#2) as of 2018-02-09
- fairly complicated implimentation
- supports slices, "arrays", vectors, nibble pairs (extensive)
- provides formatting, num-traits (math on nibbles)
- provides distinct types to cover cases where the nibbles are start and/or end aligned
- nibbler
- latest release: 0.2.3, 2020-08-16 (as of 2020-10-09)
- license: GPL-3.0-or-later
- does funny things with 4 bools to represent a nibble
- generates strings and uses them in switch statements
- lacks a slice type that can work on real memory
- it's vec-like (Nibbles) is always used
- never packs nibbles
- nibble_vec
- latest release: 0.1.0, 2020-06-27 (as of 2020-10-09)
- license:
- provides only a vector (uses
smallvecas it's backing store) - operations like split cause allocation of a new vector
- no support for real-memory nibbles (ie: without copying)
- only limited indexing (via get and split), no range support