oxedyne/fe2o3 — fe2o3_core/src/ord.rs

1.1 KiB, 1 run

created by r1870400018:112, which is this file's identity for as long as the history lasts, whatever it is later renamed to

1	use std::cmp;
2
3	#[derive(Debug, Eq, PartialEq, Copy, Clone)]
4	pub enum Relation {
5	Less,
6	Equal,
7	Greater,
8	Complement, // e.g. equal, but opposite
9	}
10
11	impl Relation {
12
13	pub fn reverse(self) -> Self {
14	match self {
15	Self::Less => Self::Greater,
16	Self::Greater => Self::Less,
17	_ => self,
18	}
19	}
20
21	pub fn ordering(cmp: cmp::Ordering) -> Self {
22	match cmp {
23	cmp::Ordering::Less => Self::Less,
24	cmp::Ordering::Greater => Self::Greater,
25	cmp::Ordering::Equal => Self::Equal,
26	}
27	}
28
29	}
30
31	#[derive(Clone, Debug)]
32	pub struct Ordered<V: Ord + PartialOrd, N: Ord + PartialOrd> {
33	val: V,
34	ord: N,
35	}
36
37	impl<
38	V: Ord + PartialOrd,
39	N: Ord + PartialOrd,
40	>
41	Ordered<V, N>
42	{
43	pub fn new(val: V, ord: N) -> Self {
44	Self {
45	val,
46	ord,
47	}
48	}
49	}
50
51	pub fn ord_string(n: usize) -> String {
52	let suffix = match n % 10 {
53	1 if n % 100 != 11 => "st",
54	2 if n % 100 != 12 => "nd",
55	3 if n % 100 != 13 => "rd",
56	_ => "th",
57	};
58	format!("{}{}", n, suffix)
59	}