Function iter_set::cmp [−][src]
pub fn cmp<T, L, R>(a: L, b: R) -> Option<Ordering> where
T: Ord,
L: IntoIterator<Item = T>,
R: IntoIterator<Item = T>,
Compare two sets represented by sorted, deduplicated iterators.
If the iterators are equal, then Some(Equal)
is returned. If a
is a subset of b
then
Some(Less)
is returned. If a
is a superset of b
then Some(Greater)
is returned.
Otherwise, None
is returned. If a
and b
are not sorted or contain duplicate values,
the return value is unspecified.
Time complexity: O(a.len() + b.len())
.