rust and symspell

Cargo.toml

[package]
name = "aho-exploration"
version = "0.1.0"
edition = "2021"

# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

[dependencies]
aho-corasick = "0.7.19"
symspell = "0.4.3"

main.rs

use aho_corasick::AhoCorasickBuilder;
use symspell::{AsciiStringStrategy, SymSpell, Verbosity};
use std::time::{Duration, Instant};


fn main() {

    let patterns = &["apple", "maple", "snapple"];
    let haystack = "Nobody likes maple in their apple flavored Snapple.";
    let haystack2 = "Nobody likes mapleapple flavored Snapple.";
    
    let ac = AhoCorasickBuilder::new()
        .ascii_case_insensitive(true)
        .build(patterns);
    let mut matches = vec![];
    for mat in ac.find_iter(haystack2) {
        println!("{:?} - pattern {} -> haystack {}", mat, patterns[mat.pattern()], &haystack2[mat.start()..mat.end()]);
        matches.push((mat.pattern(), mat.start(), mat.end()));
    }
    println!("matches: {:?}", matches);

    // assert_eq!(matches, vec![
    //     (1, 13, 18),
    //     (0, 28, 33),
    //     (2, 43, 50),
    // ]);

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

    symspell.load_dictionary("data/frequency_dictionary_en_82_765.txt", 0, 1, " ");
    symspell.load_bigram_dictionary(
      "./data/frequency_bigramdictionary_en_243_342.txt",
      0,
      2,
      " "
    );
    let start = Instant::now();

    let suggestions = symspell.lookup("roket", Verbosity::Top, 2);
    println!("sentence 0: {:?}", 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!("sentence 1: {:?}", compound_suggestions);

    let sentence = "whereisthelove";
    let segmented = symspell.word_segmentation(sentence, 2);
    println!("sentence 2: {:?}", segmented);
    let duration = start.elapsed();
    println!("Time elapsed in expensive_function() is: {:?}", duration);

}