int hashmap_put(Hashmap *h, const void *key, void *value);
int hashmap_update(Hashmap *h, const void *key, void *value);
int hashmap_replace(Hashmap *h, const void *key, void *value);
int hashmap_put(Hashmap *h, const void *key, void *value);
int hashmap_update(Hashmap *h, const void *key, void *value);
int hashmap_replace(Hashmap *h, const void *key, void *value);