[−][src]Function out::iter::max_unstable_by_key
pub fn max_unstable_by_key<T, K: Ord>(
iter: impl IntoIterator<Item = T>,
n: usize,
f: impl FnMut(&T) -> K
) -> Vec<T>
Returns the n
largest items from an iterator with a key extraction function.
This sort is unstable (i.e. may reorder equal elements)
and typically faster than max_by_key
.
Panics
Panics if n > len
.
Examples
let max = out::iter::max_unstable_by_key(-10_i32..10, 3, |a| a.abs()); assert_eq!(max, [9, -9, -10]);