rocket::mtls::oid::asn1_rs::nom::lib::std::cmp

Function max_by_key

1.53.0 · Source 
pub fn max_by_key<T, F, K>(v1: T, v2: T, f: F) -> T
where
    F: FnMut(&T) -> K,
    K: Ord,
Available on crate feature mtls only.
Expand description

Returns the element that gives the maximum value from the specified function.

Returns the second argument if the comparison determines them to be equal.

§Examples

use std::cmp;

let result = cmp::max_by_key(-2, 1, |x: &i32| x.abs());
assert_eq!(result, -2);

let result = cmp::max_by_key(-2, 2, |x: &i32| x.abs());
assert_eq!(result, 2);