min_by_key

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

Function min_by_key 

1.53.0 (const: unstable) · Source 
pub fn min_by_key<T, F, K>(v1: T, v2: T, f: F) -> T
where
    F: FnMut(&T) -> K,
    K: Ord,
Available on crate features mtls and std only.
Expand description

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

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

§Examples

use std::cmp;

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

let result = cmp::min_by_key(2, -3, |x: &i32| x.abs());
assert_eq!(result, 2);

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