#levenshtein #distance #generic #string #compute #slice #characters

generic_levenshtein

Generic and fast implementation of the Levenshtein distance

5 releases

0.2.1 Mar 2, 2025
0.2.0 Dec 24, 2019
0.2.0-1 Mar 2, 2025
0.1.1 Dec 17, 2019
0.1.0 Dec 15, 2019

#549 in Algorithms

Download history 247/week @ 2025-02-26 35/week @ 2025-03-05

282 downloads per month

MIT license

11KB
108 lines

README

Docs

A generic and fast implementation of the Levenshtein distance.

Generic

This crate can work on slices of any kind. It can therefore:

  • Compute a distance in characters between two strings:
assert_eq!(distance ("abc", "aaxcc"), 3);
  • Compute a distance in words between two strings:
assert_eq!(
   distance (
      "The quick brown fox".split (' ').collect::<Vec<_>>(),
      "The very quick brown cat".split (' ').collect()),
   2);
  • Or even compute a distance between two sequences of anything:
assert_eq!(distance (vec![1, 2, 3], vec![0, 1, 3, 3, 4]), 3);

Fast

At the time of writing, this crate is among the fastest on crates.io when working with text:

Identical Same length Different lengths
generic_levenshtein 2 3_316 3_842
levenshtein v1.0.4 2 3_461 3_960
strsim v0.11.1 2_450 2_279 2_928
distance v0.4.0 5_688 5_691 5_831
eddie v0.4.2 61 1_650 2_531
txtdist v0.2.1 4_263 4_240 4_963
fuzzy-search v0.1.1 5_879 5_761 6_532

All times in ns on an AMD Ryzen 7 9700X @ 3.8GHz.

No runtime deps