[rustc.git] / src / test / run-pass / nll / process_or_insert_default.rs

// run-pass

use std::collections::HashMap;

fn process_or_insert_default(map: &mut HashMap<usize, String>, key: usize) {
    match map.get_mut(&key) {
        Some(value) => {
            process(value);
        }
        None => {
            map.insert(key, "".to_string());
        }
    }
}

fn process(x: &str) {
    assert_eq!(x, "Hello, world");
}

fn main() {
    let map = &mut HashMap::new();
    map.insert(22, format!("Hello, world"));
    map.insert(44, format!("Goodbye, world"));
    process_or_insert_default(map, 22);
    process_or_insert_default(map, 66);
    assert_eq!(map[&66], "");
}
Commit	Line	Data
b7449926 XL	1	// run-pass
b7449926 XL	2
ff7c6d11 XL	3	use std::collections::HashMap;
	4
	5	fn process_or_insert_default(map: &mut HashMap<usize, String>, key: usize) {
	6	match map.get_mut(&key) {
	7	Some(value) => {
	8	process(value);
	9	}
	10	None => {
	11	map.insert(key, "".to_string());
	12	}
	13	}
	14	}
	15
	16	fn process(x: &str) {
	17	assert_eq!(x, "Hello, world");
	18	}
	19
	20	fn main() {
	21	let map = &mut HashMap::new();
	22	map.insert(22, format!("Hello, world"));
	23	map.insert(44, format!("Goodbye, world"));
	24	process_or_insert_default(map, 22);
	25	process_or_insert_default(map, 66);
	26	assert_eq!(map[&66], "");
	27	}