1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55

use std::{
    collections::hash_map::DefaultHasher,
    hash::{Hash, Hasher},
    thread,
    time::Duration,
};

use backtrace::Backtrace;

use crate::IntoF32;

pub fn backtrace() {
    let bt = Backtrace::new();
    println!("{bt:?}");
    error!("{bt:?}");
}

pub fn hash(obj: impl ToString + Hash) -> u64 {
    let mut hasher = DefaultHasher::new();
    obj.hash(&mut hasher);
    hasher.finish()
}

pub fn sleep(duration: impl IntoF32) {
    thread::sleep(Duration::from_nanos((duration.into_f32() * 1000000000.0) as _));
}

pub trait Toggle {
    fn toggle(&mut self) -> bool;
}

/// Returns old value
impl Toggle for bool {
    fn toggle(&mut self) -> bool {
        *self = !*self;
        !*self
    }
}

#[cfg(test)]
mod test {

    use crate::{random::Random, Toggle};

    #[test]
    fn toggle() {
        let mut val = bool::random();

        for _ in 0..10 {
            let prev = val;
            assert_eq!(val.toggle(), prev);
            assert_eq!(val, !prev);
        }
    }
}