type SetAlgebraIter<'self, T> = FilterMap<'static, (&'self HashSet<T>, &'self T), &'self T, Zip<Repeat<&'self HashSet<T>>, HashSetIterator<'self, T>>>;
Set operations iterator
Prefix searches with a type followed by a colon (e.g.
fn:) to restrict the search to a given type.
Accepted types are: fn, mod,
struct (or str), enum,
trait, typedef (or
tdef).