#define SET_FOREACH(e, s, i) \
for ((i) = ITERATOR_FIRST; set_iterate((s), &(i), (void**)&(e)); )
+#define SET_FOREACH_MOVE(e, d, s) \
+ for (; ({ e = set_first(s); assert_se(!e || set_move_one(d, s, e) >= 0); e; }); )
+
DEFINE_TRIVIAL_CLEANUP_FUNC(Set*, set_free);
DEFINE_TRIVIAL_CLEANUP_FUNC(Set*, set_free_free);