polars_utils/
priority.rs

1use std::cmp::Ordering;
2
3/// A pair which is ordered exclusively by the first element.
4#[derive(Copy, Clone, Debug)]
5pub struct Priority<P, T>(pub P, pub T);
6
7impl<P: Ord + Eq, T> Ord for Priority<P, T> {
8    fn cmp(&self, other: &Self) -> Ordering {
9        self.0.cmp(&other.0)
10    }
11}
12
13impl<P: Ord + Eq, T> PartialOrd for Priority<P, T> {
14    fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
15        Some(self.cmp(other))
16    }
17}
18
19impl<P: Eq, T> PartialEq for Priority<P, T> {
20    fn eq(&self, other: &Self) -> bool {
21        self.0 == other.0
22    }
23}
24
25impl<P: Eq, T> Eq for Priority<P, T> {}