Reverse in core::cmp - Rust (original) (raw)
Struct Reverse
1.19.0 · Source
#[repr(transparent)]
pub struct Reverse<T>(pub T);Expand description
A helper struct for reverse ordering.
This struct is a helper to be used with functions like Vec::sort_by_key and can be used to reverse order a part of a key.
§Examples
use std::cmp::Reverse;
let mut v = vec![1, 2, 3, 4, 5, 6];
v.sort_by_key(|&num| (num > 3, Reverse(num)));
assert_eq!(v, vec![3, 2, 1, 6, 5, 4]);Tests for self and other values to be equal, and is used by ==.
Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
This method returns an ordering between self and other values if one exists. Read more
Tests less than (for self and other) and is used by the < operator. Read more
Tests less than or equal to (for self and other) and is used by the<= operator. Read more
Tests greater than (for self and other) and is used by the >operator. Read more
Tests greater than or equal to (for self and other) and is used by the >= operator. Read more