Function kvarn::prelude::compact_str::core::cmp::min_by_key

1.53.0 (const: unstable) · source ·

pub fn min_by_key<T, F, K>(v1: T, v2: T, f: F) -> Twhere
    F: FnMut(&T) -> K,
    K: Ord,

Available on non-crate feature miri-test-libstd 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;

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