erreur 0.2.1

A tiny crate that facilitates error handling, including tracing line numbers, customizing and propagating error messages.
Documentation 
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use std::collections::HashMap;

use erreur::*;
use rand::RngExt;

fn main() -> Resultat<()> {
    let mut rng = rand::rng();

    let zoo = init_dict();
    let dice = rng.random_range(1..=6);

    let animal = zoo
        .get(&dice)
        .ifnone("UnluckyException", format!("dice = {}", dice))?;
    // there's also a lazy variant: `.ifnone_()`
    println!("{}", animal);

    Ok(())
}

fn init_dict() -> HashMap<i32, String> {
    let mut dict = HashMap::new();
    dict.insert(1, "bear".to_string());
    dict.insert(3, "kangaroo".to_string());
    dict.insert(5, "cockatoo".to_string());
    dict
}