Rust code shared from the playground

playground.rs

use std::collections::HashMap;

fn main() {
    let mut map = HashMap::new();
    let words = vec!["quux", "bar", "floorgle", "bar"];
    
    for word in words.iter() {
        let word = *word;
        let mut cond = false;
        {
            let x = map.entry(word).or_insert(0);
            cond = *x < 3;
        }
    
        if cond {
            let y = map.entry(words[word.len() % words.len()]).or_insert(0);
            *y += 1;
            println!("Hello, world!");
        }
    }
}