Function iter_set::cmp_by_key [−][src]
pub fn cmp_by_key<T, L, R, K, F>(a: L, b: R, key: F) -> Option<Ordering> where
T: Ord,
L: IntoIterator<Item = T>,
R: IntoIterator<Item = T>,
K: Ord,
F: FnMut(&T) -> K,
Compare two sets represented by sorted, deduplicated iterators, using a key extraction function.
See cmp
.