# Function core::cmp::minmax_by

source ·

    pub fn minmax_by<T, F>(v1: T, v2: T, compare: F) -> [T; 2]where
        F: FnOnce(&T, &T) -> Ordering,

🔬This is a nightly-only experimental API. (`cmp_minmax` #115939)
Expand description

Returns minimum and maximum values with respect to the specified comparison function.

Returns `[v1, v2]` if the comparison determines them to be equal.

## Examples

    #![feature(cmp_minmax)]
    use std::cmp;

    assert_eq!(cmp::minmax_by(-2, 1, |x: &i32, y: &i32| x.abs().cmp(&y.abs())), [1, -2]);
    assert_eq!(cmp::minmax_by(-2, 2, |x: &i32, y: &i32| x.abs().cmp(&y.abs())), [-2, 2]);

    // You can destructure the result using array patterns
    let [min, max] = cmp::minmax_by(-42, 17, |x: &i32, y: &i32| x.abs().cmp(&y.abs()));
    assert_eq!(min, 17);
    assert_eq!(max, -42);

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