bool shash_is_empty(const struct shash *);
size_t shash_count(const struct shash *);
struct shash_node *shash_add(struct shash *, const char *, const void *);
+struct shash_node *shash_add_nocopy(struct shash *, char *, const void *);
bool shash_add_once(struct shash *, const char *, const void *);
void shash_add_assert(struct shash *, const char *, const void *);
void shash_delete(struct shash *, struct shash_node *);