SymSpell

Rust implementation of brilliant SymSpell originally written in C# by @wolfgarbe.

Usage

extern crate symspell;

use symspell::{AsciiStringStrategy, SymSpell, Verbosity};

fn main() {
    let mut symspell: SymSpell<AsciiStringStrategy> = SymSpell::default();

    symspell.load_dictionary("data/frequency_dictionary_en_82_765.txt", 0, 1, " ");

    let suggestions = symspell.lookup("roket", Verbosity::Top, 2);
    println!("{:?}", suggestions);

    let sentence = "whereis th elove hehad dated forImuch of thepast who couqdn'tread in sixtgrade and ins pired him"
    let compound_suggestions = symspell.lookup_compound(sentence, 2);
    println!("{:?}", compound_suggestions);
}

Advanced Usage

Using Custom Settings

let mut symspell: SymSpell<AsciiStringStrategy> = SymSpellBuilder::default()
    .max_dictionary_edit_distance(2)
    .prefix_length(7)
    .count_threshold(1)
    .build()
    .unwrap()

String Strategy

String strategy is abstraction for string manipulation, for example preprocessing.

There are two strategies included:

• UnicodeiStringStrategy
  • Doesn't do any prepocessing and handles strings as they are.
• AsciiStringStrategy
  • Transliterates strings into ASCII only characters.
  • Useful when you are working with accented languages and you don't want to care about accents, etc

To configure string strategy just pass it as a type parameter:

let mut ascii_symspell: SymSpell<AsciiStringStrategy> = SymSpell::default();
let mut unicode_symspell: SymSpell<UnicodeiStringStrategy> = SymSpell::default();