𓃠 on Nostr: /run rust extern crate rand; use rand::prelude::IteratorRandom; use std::time; use ...

/run rust
extern crate rand;
use rand::prelude::IteratorRandom;
use std::time;
use regex::Regex;

const CHAR_LIST: &str = "あぃいぅうぇえぉおかがきぎくぐけげこごさざしじすずせぜそぞただちぢっつづてでとどなにぬねのはばぱひびぴふぶぷへべぺほぼぽまみむめもゃやゅゆょよらりるれろゎわゐゑをん";
fn gen_chars(size: usize) -> String {
let mut rng = &mut rand::thread_rng();
let mut result: Vec<char> = Vec::new();
for _ in 0..size {
result.push(CHAR_LIST.chars().choose(&mut rng).unwrap());
}
result.into_iter().collect()
}

fn main() {
let s = gen_chars(1000);

println!("Method A:");
let now = time::Instant::now();
if let Some(_m) = s.find('あ') {
//todo!();
}
println!("{:?}", now.elapsed());

println!("Method B:");
let now = time::Instant::now();
let re = Regex::new("あ").unwrap();
let mut locs = re.capture_locations();
re.captures_read(&mut locs, &s);
if let Some(_m) = locs.get(0) {
//todo!();
}
println!("{:?}", now.elapsed());
}