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
#![allow(incomplete_features)]
#![warn(clippy::all, clippy::pedantic)]
pub mod alternative;
pub mod applicative;
pub mod functor;
pub mod monad;
pub mod monoid;
pub mod semigroup;
#[inline]
pub const fn id<T>(t: T) -> T {
t
}
#[cfg(test)]
mod tests {
use super::*;
#[derive(Copy, Clone, Debug, PartialEq)]
enum Size {
Big,
}
#[derive(Copy, Clone, Debug, PartialEq)]
struct Chungus {
pub size: Size,
}
#[test]
fn identity() {
assert_eq!(id(1), 1);
assert_eq!(id(vec![1]), vec![1]);
let chungus = Chungus { size: Size::Big };
assert_eq!(id(chungus), chungus);
}
}